RT Journal T1 DIrectory of pediatric societies JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1939 FD July 1 VO 58 IS 1 SP 230 OP 236 DO 10.1001/archpedi.1939.01990070242027 UL http://dx.doi.org/10.1001/archpedi.1939.01990070242027 AB