TI - ASsociation news PT - JOUR DP - 1929 TA - Journal of the American Medical Association pages = {39}, VI - 93 IP - 1 AID - 10.1001/jama.1929.02710010045016 [doi] 4100 - http://dx.doi.org/10.1001/jama.1929.02710010045016 SO - Journal of the American Medical Association July 6, 1929 93(1):39