TI - DOmestic abstracts PT - JOUR DP - 1989 TA - JAMA pages = {37-39}, VI - 262 IP - 1 AID - 10.1001/jama.1989.03430010049029 [doi] 4100 - http://dx.doi.org/10.1001/jama.1989.03430010049029 SO - JAMA July 7, 1989 262(1):37