TI - THe practical medicine series. under the general editorial charge of gustavus p. head, m.d., professor of laryngology and rhinology, chicago postgraduate medical school. PT - JOUR DP - 1909 TA - Journal of the American Medical Association pages = {1688}, VI - LIII IP - 20 AID - 10.1001/jama.1909.02550200082029 [doi] 4100 - http://dx.doi.org/10.1001/jama.1909.02550200082029 SO - Journal of the American Medical Association November 13, 1909 LIII(20):1688