TI - ORganization section PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {1303-1309}, VI - 141 IP - 18 AID - 10.1001/jama.1949.02910180031010 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02910180031010 SO - Journal of the American Medical Association December 31, 1949 141(18):1303