TI - WArning against book agent PT - JOUR DP - 1909 TA - Journal of the American Medical Association pages = {1113}, VI - LIII IP - 14 AID - 10.1001/jama.1909.02550140045014 [doi] 4100 - http://dx.doi.org/10.1001/jama.1909.02550140045014 SO - Journal of the American Medical Association October 2, 1909 LIII(14):1113