Obeid, Rima, Andrew McCaddon and Wolfgang Herrmann. "The role of hyperhomocysteinemia and B-vitamin deficiency in neurological and psychiatric diseases" Homocysteine Metabolism and Hyperhomocysteinema. Clinical Chemical Laboratory Medicine, 45.12 (2007): 1590-1606. Retrieved 25 May. 2013, from doi:10.1515/CCLM.2007.356

Obeid, R., McCaddon, A. & Herrmann, W. (2007). The role of hyperhomocysteinemia and B-vitamin deficiency in neurological and psychiatric diseases. Homocysteine Metabolism and Hyperhomocysteinema. Clinical Chemical Laboratory Medicine, 45(12), pp. 1571-1876. Retrieved 25 May. 2013, from doi:10.1515/CCLM.2007.356

Obeid, Rima, Andrew McCaddon and Wolfgang Herrmann. 2007. The role of hyperhomocysteinemia and B-vitamin deficiency in neurological and psychiatric diseases. Homocysteine Metabolism and Hyperhomocysteinema. Clinical Chemical Laboratory Medicine. 45(12): 1571-1876. Retrieved 25 May. 2013, from doi:10.1515/CCLM.2007.356