TI - NEws and comment PT - JOUR DP - 1939 TA - American Journal of Diseases of Children pages = {168-169}, VI - 57 IP - 1 AID - 10.1001/archpedi.1939.01990010177012 [doi] 4100 - http://dx.doi.org/10.1001/archpedi.1939.01990010177012 SO - American Journal of Diseases of Children January 1, 1939 57(1):168