RT Journal T1 DIrectory of pediatric societies JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1939 FD March 1 VO 57 IS 3 SP 732 OP 738 DO 10.1001/archpedi.1939.01990030246032 UL http://dx.doi.org/10.1001/archpedi.1939.01990030246032 AB