(2003). Vegetarianism and vitamin B-12 (cobalamin) deficiency. Am J Clin Nutr 78, 3-6.
Craig, W.J. (2010). Nutrition concerns and health effects of vegetarian diets. Nutr. Clin. Pract 25, 613-620.
Gupta AK, Damji A, & Uppaluri A. (2004). Vitamin B12 deficiency. Prevalence among South Asians at a Toronto clinic. Can Fam Physician 50,743-7.
Lee BJ, Huang MC, Chung LJ, Cheng CH, Lin KL, Su KH.(2004). Folic acid and vitamin B12 are more effective than vitamin B6 in lowering fasting plasma homocysteine concentration in patients with coronary artery disease. Eur J Clin Nutr 58,481-7.
Lewerin C, Nilsson-Ehle H, Matousek M, Lindstedt G, & Steen B. (2003). Reduction of plasma homocysteine and serum methymalonate concentrations in apparently healthy elderly subjects after treatment with folic acid, vitamin B12 and vitamin B6: a randomized trial. Eur J Clin Nutr, 57, 1426-36.
Li, D. (2011). Chemistry behind vegetarianism. J. Agric. Food Chem, 59, 777-784.
Miyamoto E, Yabuta Y, Kwak C.S, Enomoto T, & Watanabe F. (2009). Characterization of vitamin B12 compounds from Korean purple laver (Porphyra sp.) products. J. Agric. Food Chem. 57, 2793-