Plaintiffs Keith Daniels and his wife Tonya Koonce-Daniels brought suit against defendant Durham County Hospital Corporation (“the Hospital”) for the death of their baby, Lorren Alaine Daniels, due to injuries they contend were sustained during her delivery. Plaintiffs have appealed from the trial court’s order granting the Hospital summary judgment, arguing that the Hospital is liable based on (1) its nurses’ failure to oppose the delivering doctor’s decision to perform a mid-forceps delivery, (2) the nurses’ failure to obtain plaintiffs’ informed consent, and (3) the Hospital’s failure to adopt a policy governing mid-forceps deliveries. We affirm the trial court’s grant of summary judgment in favor of defendant.
Facts
On 1 September 1995, Ms. Koonce-Daniels was admitted to the Hospital by her private physician, Dr. James Dingfelder, for induction of labor due to her elevated blood pressure. At approximately 7:30 a.m. on 2 September 1995, Nurse Clara Butler Sharpe, an employee of the Hospital, came on duty as Ms. Koonce-Daniels’ primary labor and delivery nurse. Nurse Sharpe had worked with Dr. Dingfelder for 18 to 19 years.
At 10:30 a.m., Ms. Koonce-Daniels received an epidural to address her labor pains. Her labor continued through the afternoon without any signs of fetal distress or maternal compromise. At 3:55 p.m., Ms. Koonce-Daniels was in the second stage of labor, the point at which she would normally push the baby down further into the birth canal to complete a normal vaginal delivery. Nurse Sharpe assessed Ms. Koonce-Daniels at this time and noted that her vital signs were “stable” and that the baby’s heart rate was “normal.” Dr. Dingfelder, however, performed a vaginal examination of Ms. Koonce-Daniels *537and determined that the baby was in an “occiput posterior” position, looking up at her mother’s stomach, rather than in the normal position, looking down towards her mother’s back.
Dr. Dingfelder made the decision to perform a forceps delivery rather than to allow Ms. Koonce-Daniels to begin pushing and attempt a normal vaginal delivery. At this point, the baby was at a “plus-two” station in the birth canal. In other words, she had not yet proceeded far enough along in the birth canal for her head to be visible during contractions. A forceps delivery performed upon such a baby is known as a “mid-forceps” delivery. At 4:04 p.m., Dr. Dingfelder used forceps to rotate the baby 180 degrees to the proper anterior position and then to deliver the baby. He was assisted in the delivery by Nurse Sharpe and Nurse Kay Parker (also an employee of the Hospital).
When Lorren was delivered at 4:18 p.m., she was unresponsive, blue in color, and not breathing. Subsequent examination revealed that she had been bom with a cervical spine injury. She was paralyzed from the neck down and unable to breathe on her own. Lorren died from this spinal injury on 11 April 1996.
In 1997, plaintiffs filed suit against Dr. Dingfelder and the Hospital and its agents, alleging joint and several liability for negligence and medical malpractice arising out of Lorren’s spinal injury and death. Plaintiffs voluntarily dismissed their claims against the Hospital in 1998 and later entered into a settlement agreement with Dr. Dingfelder. On 19 February 1999, plaintiffs re-filed their claims against the Hospital, asserting causes of action for negligence and negligent infliction of severe emotional distress.
After filing an answer and after completion of discovery, the Hospital moved for summary judgment. In response, plaintiffs contended that the Hospital was liable based on respondeat superior (1) for its nurses’ failure to oppose the doctor’s decision to perform a mid-forceps delivery by either refusing to assist in the procedure or by invoking the hospital chain of command policy and (2) for its nurses’ failure to obtain informed consent from plaintiffs. Plaintiffs further contended that the Hospital was directly negligent in failing to adopt a policy governing the performance of mid-forceps deliveries. Following a hearing, Judge Orlando Hudson entered summary judgment in favor of the Hospital. Plaintiffs filed a timely appeal of that order.
*538Standard of Review
“It is well established that the standard of review of the grant of a motion for summary judgment requires a two-part analysis of whether, (1) the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, show that there is no genuine issue as to any material fact; and (2) the moving party is entitled to judgment as a matter of law.” Von Viczay v. Thoms, 140 N.C. App. 737, 738, 538 S.E.2d 629, 630 (2000) (internal quotation marks omitted), aff’d per curiam, 353 N.C. 445, 545 S.E.2d 210 (2001). The moving party has the burden of establishing the absence of any genuine issue of material fact and that it is entitled to judgment as a matter of law. Garner v. Rentenbach Constructors, Inc., 350 N.C. 567, 572, 515 S.E.2d 438, 441 (1999). Both before the trial court and on appeal, the evidence must be viewed in the light most favorable to the non-moving party and all inferences from that evidence must be drawn against the moving party and in favor of the non-moving party. Id. We review the trial court’s grant of summary judgment de novo. Shroyer v. County of Mecklenburg, 154 N.C. App. 163, 167, 571 S.E.2d 849, 851 (2002).
The Nurses’ Failure to Oppose the Doctor’s Decision
With respect to plaintiffs’ claim regarding the nurses’ failure to oppose the doctor’s decision to deliver plaintiffs’ baby by way of a mid-forceps delivery, defendants initially contend that the record contains insufficient evidence of proximate cause. We need not, however, address that issue because we agree with defendant’s alternative contention that plaintiffs’ evidence is not sufficient to meet the standard set forth in Byrd v. Marion Gen. Hosp., 202 N.C. 337, 162 S.E. 738 (1932).
Under Byrd, a nurse may not be held liable for obeying a doctor’s order unless “such order was so obviously negligent as to lead any reasonable person to anticipate that substantial injury would result to the patient from the execution of such order or performance of such direction.” Id. at 341, 162 S.E. at 740. The Court stressed that “[t]he law contemplates that the physician is solely responsible for the diagnosis and treatment of his patient. Nurses are not supposed to be experts in the technique of diagnosis or the mechanics of treatment.” Id. at 341-42, 162 S.E. at 740 (emphasis added).
Although these principles were set out more than 70 years ago, they remain the controlling law in North Carolina. Blanton v. Moses *539H. Cone Mem’l Hosp., Inc., 319 N.C. 372, 376, 354 S.E.2d 455, 458 (1987). Plaintiffs refer repeatedly to the responsibilities of the “delivery team” and argue for a collaborative process with joint responsibility. While medical practices, standards, and expectations have certainly changed since 1932 and even since 1987, this Court is not free to alter the standard set forth in Byrd and Blanton.
In applying Byrd, this Court has stated: “While a nurse may disobey the instructions of a physician where those instructions are obviously wrong and will result in harm to the patient, the duty to disobey does not extend to situations where there is a difference of medical opinion.” Paris v. Michael Kreitz, Jr., P.A., 75 N.C. App. 365, 380, 331 S.E.2d 234, 245 (internal citations omitted), disc. review denied, 315 N.C. 185, 337 S.E.2d 858 (1985). In Paris, this Court noted that while the negligence of the doctor was a question of fact, “it is clear that the negligence was not so obvious as to require [the nurse] to disobey an instruction or refuse to administer a treatment [because] . . . [a]ny disagreement or contrary recommendation she may have had as to the treatment prescribed would have necessarily been premised on a separate diagnosis, which she was not qualified to render.” Id. at 381, 331 S.E.2d at 245.
Here, although plaintiffs’ expert witness affidavits list ten functions that nurses perform in the course of a mid-forceps delivery, plaintiffs do not contend that the defendant nurses were negligent in performing those functions. Instead, plaintiffs contend that the nurses should have challenged the doctor’s decision and, if unsuccessful in changing that decision, should have “refused to participate as a part of Tonya Daniels’s labor and delivery team in the non-indicated and unconsented-to mid-forceps rotation and delivery.” (Emphasis omitted.)
Based on our review of plaintiffs’ evidence, even if there is an issue of fact regarding the negligence of Dr. Dingfelder, that evidence does not establish that the negligence was so obvious as to require the nurses to refuse to obey the doctor. In arguing that the nurses should have challenged the doctor’s order, plaintiffs discuss factual issues regarding “clinical indications,” the level of the baby in the birth canal, the degree of maternal and fetal distress, and the viability and appropriateness of proceeding to stage two labor — all factors underlying a medical diagnosis and a decision regarding treatment. They argue that the nurses, in considering all of these factors, should have concluded that a mid-forceps delivery was not appropriate.
*540Thus, just as in Paris, plaintiffs present a medical dispute regarding diagnosis and treatment that nurses are not qualified to resolve. See N.C. Gen. Stat. § 90-171.20(7) (2003) (providing that the “practice of nursing by a registered nurse” includes “[cjollaborating with other health care providers in determining the appropriate health care for a patient but, subject to the provisions of G.S. 90-18.2 [governing nurse practitioners], not prescribing a medical treatment regimen or making a medical diagnosis, except under supervision of a licensed physician”). As a result, under Byrd, Blanton, and Paris, plaintiffs’ evidence fails to establish a breach of duty by the nurses and accordingly — because the claim against the Hospital was based on respon-deat superior — the trial court properly granted summary judgment to the Hospital on this claim.
Informed Consent
In addition, plaintiffs contend that the nurses and the Hospital breached a duty to obtain proper informed consent from plaintiffs even though Ms. Koonce-Daniels’ delivery was performed by her private physician. This Court is, however, bound by Cox v. Haworth, 54 N.C. App. 328, 283 S.E.2d 392 (1981). In Cox, this Court wrote:
This Court has held that if circumstances warrant, a physician has a duty to warn a patient of consequences of a medical procedure. The physician in this case was [plaintiffs] own privately retained physician. Any duty to inform [plaintiff] of the risks of the procedures would have been on the privately retained physician, not on the Hospital or its personnel. Consequently, we find that the Hospital had no duty to inform [plaintiff] of the risks and procedures to be used ... or to secure his informed consent when [plaintiff] hired his private physician to perform the [procedures]. . . . Since we find no duty on the part of the Hospital to advise [plaintiff] of the risk involved in the [procedure] and no duty to obtain his consent, [plaintiff] could not recover under the facts of this case, and summary judgment was properly granted.
Id. at 332-33, 283 S.E.2d at 395-96 (internal citations omitted).
The only contrary authority cited by plaintiffs is Campbell v. Pitt County Mem’l Hosp., Inc., 84 N.C. App. 314, 352 S.E.2d 902 (1987). In Campbell, two judges agreed, based on the evidence presented, that the hospital could be held liable for failing to obtain informed consent. Following an appeal based on the dissent on that issue, the North Carolina Supreme Court was evenly divided and accordingly *541affirmed the Campbell opinion, but stripped it of precedential value. Campbell v. Pitt County Mem’l Hosp., Inc., 321 N.C. 260, 265-66, 362 S.E.2d 273, 276 (1987).
In any event, plaintiffs’ showing in this case does not rise to the level found sufficient in Campbell. The concurring opinion in Campbell clarified that the question before the panel was “whether a court should instruct a jury regarding a duty which, the evidence shows, the hospital had imposed on itself.” Campbell, 84 N.C. App. at 330, 352 S.E.2d at 911 (Becton, J., concurring). The concurrence stressed: “Judicial enforcement of a duty that a hospital imposes upon itself is significantly different than judicial imposition of a new duty on a hospital.” Id. The Court determined the following evidence to be sufficient to establish that the hospital had assumed a duty of obtaining informed consent: (1) expert testimony regarding a nurse’s duty to ensure that a patient is "fully informed, and (2) evidence that the “hospital had a policy requiring labor and delivery room nurses to obtain the signature of patients on a hospital consent form before delivery.” Id.
While plaintiffs in this case presented expert testimony regarding the nurses’ duty, the record contains only two pertinent policies of the hospital, including (1) a statement of patient’s rights providing that a patient has the right to obtain “[a]s much information about any proposed treatment or procedure as [the patient] may need in order to make a decision” and has a right to “[a]ctive participation in decisions regarding medical care;” and (2) a “Standard Care Statement: Labor Management” that with respect to “Patient Education” provides that “[a]ll procedures are explained and documentation noted.” In contrast to Campbell, plaintiffs in this case did not offer any evidence that the hospital required its nurses to obtain the signed consent of the hospital’s patients.1
Subsequently to Campbell, this Court reiterated the holding in Cox after noting Campbell’s lack of.precedential value: “[W]e have expressly declined to . . . impose upon a hospital the duty to obtain a patient’s informed consent before treatment when, as here, the patient is admitted by a private physician for surgery.” Clark v. Perry, *542114 N.C. App. 297, 315, 442 S.E.2d 57, 67 (1994). We are not free to disregard Cox and Clark. Any change must be accomplished by the Supreme Court or the General Assembly. The trial court, therefore, properly granted summary judgment on the informed consent claim.
Hospital Policy on Forceps Deliveries
Finally, plaintiffs contend that the Hospital may be held directly liable because of its failure to have a policy in place regarding mid-forceps deliveries. See Bost v. Riley, 44 N.C. App. 638, 647, 262 S.E.2d 391, 396 (a hospital may be found negligent for its failure to promulgate adequate rules or policies), disc. review denied, 300 N.C. 194, 269 S.E.2d 621 (1980). Plaintiffs offered expert testimony that the hospital should have had such a policy, but that witness declined to express any opinion as to what a proper policy would say. Plaintiffs offered no other evidence as to the appropriate contents of a policy governing mid-forceps deliveries.
In the present case, assuming arguendo that the defendant Hospital did breach a duty by failing to have proper policies in place, plaintiffs would have had to present evidence that such a breach was a “contributing factor” to the baby’s injuries and ultimate death. Id. at 648, 262 S.E.2d at 397 (“Where a hospital’s breach of duty is not a contributing factor to the patient’s injuries, the hospital may not be held liable.”). Without, however, evidence of what a proper policy would have stated, it is impossible to determine whether such a policy would have precluded the delivery in this case and thus whether the lack of a policy was a contributing factor to the baby’s injuries.
Because of the lack of evidence as to the contents of any required policy, the trial court properly granted summary judgment as to this claim as well. Compare Reed v. Granbury Hosp. Corp., 117 S.W.3d 404, 411-13 (Tex. App.—Fort Worth 2003) (holding that the trial court properly granted summary judgment on a claim that a hospital negligently failed to have a protocol on the administration of a particular drug to stroke patients when the expert witnesses demonstrated a complete lack of knowledge regarding the specifics of any other hospitals’ protocols concerning administration of that drug) with Edwards v. Brandywine Hosp., 438 Pa. Super. 673, 684-85, 652 A.2d 1382, 1387-88 (1995) (holding that the trial court erred in directing a verdict on the plaintiff’s claim that the hospital’s policies regarding moving catheters were inadequate when the plaintiff “introduced evi*543dence that a 48-hour rale was appropriate, but the hospital had adopted a different rale allowing catheters to be left in place for as long as 72 hours”).2
Conclusion
In sum, we hold that the trial court properly entered summary judgment for the Hospital based on (1) the lack of evidence to meet the Byrd and Blanton standards; (2) the lack of a duty under Cox and Clark for a hospital or its nurses to obtain the informed consent of a patient receiving care from a private physician; and (3) the lack of evidence as to the contents of the policy that plaintiffs contend the hospital negligently failed to adopt.
Affirmed.
Judge HUNTER concurs. Judge TYSON concurs in separate opinion.. Plaintiffs also refer to excerpts from the Joint Commission on the Accreditation of Hospitals (“JCAH”) standards applicable to the Hospital. Our Supreme Court has held that evidence a hospital failed to follow JCAH safety standards is “some evidence of negligence.” Blanton, 319 N.C. at 376, 354 S.E.2d at 458. Nothing, however, in the provided excerpts purports to place a duty on nurses, in addition to the private physician, to obtain informed consent.
. Plaintiffs have also contended that the trial court erred in considering the affidavits and depositions of Drs. Dingfelder and Fried that were submitted by the Hospital in support of its motion for summary judgment because both doctors were interested in the outcome of this case. See State Farm Life Ins. Co. v. Allison, 128 N.C. App. 74, 77, 493 S.E.2d 329, 330 (1997), disc. review denied, 347 N.C. 584, 502 S.E.2d 616 (1998). We need not, however, address these arguments since our opinion affirming summary judgment in favor of defendants does not rely on the content of those affidavits and depositions.