RT Journal T1 CUrrent comment JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1919 FD October 25 VO 73 IS 17 SP 1290 OP 1291 DO 10.1001/jama.1919.02610430038018 UL http://dx.doi.org/10.1001/jama.1919.02610430038018 AB