TI - MEdical news PT - JOUR DP - 1969 TA - JAMA pages = {2415-2426}, VI - 208 IP - 13 AID - 10.1001/jama.1969.03160130005003 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160130005003 SO - JAMA June 30, 1969 208(13):2415