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Brenda Johnson at Lone Star Center for Health and Wellness specializes in administering B-12 injections to help clients in San Antonio, TX, achieve their wellness goals
a second afternoon dose extends coverage
The Prevalence of Cobalamin Deficiency among Vegetarians Assessed by Serum Vitamin B12: a Review of Literature. European Journal of Clinical Nutrition , vol
William Castle demonstrated that gastric juice contained an "intrinsic factor" which when combined with meat ingestion resulted in absorption of the vitamin in this condition
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