Petition by defendants (Marshall B. Frink, M.D., National Emergency Services, Inc. and CP/National, Inc. a/k/a/ Community Physicians/National, Inc.) for discretionary review pursuant to G.S. 7A-31 and Appellate Rule 16(b) as to issues in addition to those presented as the basis for the dissenting opinion in the Court of Appeals allowed 19 July 2001.