1. A Radiographic Standard ofReferencefor the Growing Hand and Wrist;Pyle, S.I.; Waterhouse, A.M.; Greulich, W.W.,1971
2. Assessment of Skeletal Maturity and Prediction of Adult Height (TW2 Method);Tanner, J.M.; Whitehouse, R.H.; Marshall, W.A.,1975
3. May I clarify the reference to our studies of erythroblastotic infants in one of the recent excellent papers by Drs. Gandy and Jacobson? It is stated that we found low whole-blood folate levels in some erythroblastotic infants and that 2 who were severely anaemic showed a haematological response to daily intramuscular folic acid of 0 12-0-48 mg;Sir;et al; It might be of interest to give haematological details of the 2 erythroblastotic infants who showed a rise in reticulocytes and haemoglobin on intramuscular folic acid (Strelling,1977