1. studied the action of lecithin, choline, thyroxin, insulin, lipocaic, anterior pituitary factor and liver extract but failed to observe any response;Holt;Gaskins et al; used cortisone and,1939
2. Ahrens, E. H. (1954). 11th M. & R. Pediatric Research Conference, p. 30. Columbus, Ohio.
3. and Erickson, B. N. (1939). J. Pediat., 14, 570.
4. Stanford mtied;Bloomfield, A.L.; Shenson, B.,1947
5. British Medical Journal (1954), 2, 1096;Bruton