TI - MEdical news PT - JOUR DP - 1969 TA - JAMA pages = {949-962}, VI - 208 IP - 6 AID - 10.1001/jama.1969.03160060019003 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160060019003 SO - JAMA May 12, 1969 208(6):949