TI - CUrrent comment PT - JOUR DP - 1919 TA - Journal of the American Medical Association pages = {497-498}, VI - 72 IP - 7 AID - 10.1001/jama.1919.02610070035020 [doi] 4100 - http://dx.doi.org/10.1001/jama.1919.02610070035020 SO - Journal of the American Medical Association February 15, 1919 72(7):497