TI - REferences and reviews PT - JOUR DP - 1969 TA - JAMA pages = {546-572}, VI - 208 IP - 3 AID - 10.1001/jama.1969.03160030120037 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160030120037 SO - JAMA April 21, 1969 208(3):546