TI - REferences and reviews PT - JOUR DP - 1969 TA - JAMA pages = {1506-1544}, VI - 208 IP - 8 AID - 10.1001/jama.1969.03160080170050 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160080170050 SO - JAMA May 26, 1969 208(8):1506