TI - REferences and reviews PT - JOUR DP - 1969 TA - JAMA pages = {430-455}, VI - 209 IP - 3 AID - 10.1001/jama.1969.03160160066039 [doi] 4100 - http://dx.doi.org/10.1001/jama.1969.03160160066039 SO - JAMA July 21, 1969 209(3):430