TI - MEdical news PT - JOUR DP - 1919 TA - Journal of the American Medical Association pages = {542-547}, VI - 73 IP - 7 AID - 10.1001/jama.1919.02610330080018 [doi] 4100 - http://dx.doi.org/10.1001/jama.1919.02610330080018 SO - Journal of the American Medical Association August 16, 1919 73(7):542