TI - CUrrent comment PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {268}, VI - 141 IP - 4 AID - 10.1001/jama.1949.02910040030011 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02910040030011 SO - Journal of the American Medical Association September 24, 1949 141(4):268