RT Journal T1 THerapeutics JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1919 FD December 6 VO 73 IS 23 SP 1768 OP 1769 DO 10.1001/jama.1919.02610490032015 UL http://dx.doi.org/10.1001/jama.1919.02610490032015 AB