RT Journal T1 WIlliam hallock park, m.d. 1863-1939 JF American Journal of Diseases of Children JO American Journal of Diseases of Children YR 1939 FD July 1 VO 58 IS 1 SP 175 OP 176 DO 10.1001/archpedi.1939.01990070187019 UL http://dx.doi.org/10.1001/archpedi.1939.01990070187019 AB