RT Journal T1 TOpics of the week. JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1889 FD November 16 VO XIII IS 20 SP 711 OP 712 DO 10.1001/jama.1889.02401160025007 UL http://dx.doi.org/10.1001/jama.1889.02401160025007 AB