Association of Elevated Umbilical Cord Blood Creatine Kinase and Myoglobin Levels with the Presence of Cocaine Metabolites in Maternal Urine - Roby, Paul V; Glenn, Consuelo M; Watkins, Sandra L; Baxter, Louise M; Kenny, Margaret A; Nazar-Stewart, Valle; Mayock, Dennis E (American Journal of Perinatology, 1996)