TI - CUrrent comment PT - JOUR DP - 1929 TA - Journal of the American Medical Association pages = {150-151}, VI - 92 IP - 2 AID - 10.1001/jama.1929.02700280054020 [doi] 4100 - http://dx.doi.org/10.1001/jama.1929.02700280054020 SO - Journal of the American Medical Association January 12, 1929 92(2):150