RT Journal T1 DIrectory of pediatric societies JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1939 FD June 1 VO 57 IS 6 SP 1478 OP 1484 DO 10.1001/archpedi.1939.01990060258031 UL http://dx.doi.org/10.1001/archpedi.1939.01990060258031 AB