RT Journal T1 DIrectory of pediatric societies JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1949 FD March 1 VO 77 IS 3 SP 416 OP 424 DO 10.1001/archpedi.1949.02030040419015 UL http://dx.doi.org/10.1001/archpedi.1949.02030040419015 AB