1. Preventive iron and folic acid therapy in pregnancy;Castrén;Ann. Chir. Gynaec. Fenn.,1968
2. Diagnosis of folate deficiency in pregnancy;Chanarin;Acta Obstet. Gynec. Scand.,1967
3. Folic acid and folinic acid in maternal and foetal blood;Grossowicz;Brit. J. Haemat.,1960
4. Folic acid activity of serum in rheumatoid arthritis;Markkanen;Rheumatism,1966
5. Folate metabolism in connection with parturition;Markkanen;Int. J. Vitam. Res.,1969