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- [21] APPRAISING PHYSICAL STATUS THE SELECTION OF MEASUREMENTS UNIVERSITY OF IOWA STUDIES IN CHILD WELFARE, 1936, 12 (02): : 9 - 126
- [25] Evidence of selection bias in preterm survival studies: a systematic review ARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION, 2001, 84 (02): : F79 - F84