RT Journal T1 SOcieties. JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1899 FD August 12 VO XXXIII IS 7 SP 412 OP 416 DO 10.1001/jama.1899.02450590042007 UL http://dx.doi.org/10.1001/jama.1899.02450590042007 AB