SHEKOOHI, N.; JAVANBAKHT, M. H.; SOHRABI, M.; ZAREI, M.; MOHAMMADI, H.; DJALALI, M. Smoking Discriminately Changes the Serum Active and Non-Active Forms of Vitamin B12. Acta Medica Iranica, v. 55, n. 6, p. 389-394, 19 ago. 2017.