1. Microbiologic determination of folic acid derivatives in blood. Blood 1962; 20;Grossowicz, N.; Mandelbaum-Shavit, F.; Davidoff, R.; Aronovitch, J.
2. Relapsing 80 Archives of Disease in Childhood, 1987, 62 megaloblastic anemia and mental retardation as defect in gastrointestinal absorption of folic acid;Luhby, A.L.; Eagle, F.J.; Roth, E.; Cooperman, J.M.;Am J Dis Child,1961
3. Congenital isolated defect of folic acid absorption;J Pediatr,1973
4. Therapy of congenital folate malabsorption;Poncz, M.; Colman, N.; Herbert, N.; Schwartz, E.; Cohen, A.R.;J Pediatr; Depressed cell mediated immunity in megaloblastic anemia due to folic acid deficiency,1981