1. Folic acid deficiency: a reversible cause of infantile hypotonia;Shapira;J Pediatr,1978
2. Neurologic disorders responsive to folic acid therapy;Botez;CMA Journal,1976
3. Neuropsychological correlates of folic acid deficiency;Botez,1979
4. The prevalence and causes of folic acid deficiency in the United States;Rosenberg,1979