Hyperhomocysteinemia, Deep Vein Thrombosis and Vitamin B12 Deficiency in a Metformin-treated Diabetic Patient - Hsuan-Yu Lin; Chih-Yuan Chung; Cheng-Shyong Chang; Ming-Lun Wang; Jen-Shiou Lin; Ming-Ching Shen (Journal of the Formosan Medical Association, 2007)