Kellermann AL, Fihn SD, LoGerfo JP, Copass MK. Utilization and yield of drug screening in the emergency department. Am J Emerg Med. 1988 Jan;6(1):14-20.
Kellermann AL, Fihn SD, LoGerfo JP, Copass MK. Utilization and yield of drug screening in the emergency department. Am J Emerg Med. 1988 Jan;6(1):14-20.