TI - MEdical news PT - JOUR DP - 1969 TA - JAMA pages = {453-466}, VI - 208 IP - 3 AID - 10.1001/jama.1969.03160030027003 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160030027003 SO - JAMA April 21, 1969 208(3):453