Thacher, T. D., Fischer, P. R., Obadofin, M. O., Levine, M. A., Singh, R. J., & Pettifor, J. M. (2010). Comparison of Metabolism of Vitamins D(2) and D(3) in Children With Nutritional Rickets. Wiley Subscription Services, Inc., A Wiley Company.

Thacher, Tom D., Philip R. Fischer, Michael O. Obadofin, Michael A. Levine, Ravinder J. Singh, und John M. Pettifor. Comparison of Metabolism of Vitamins D(2) and D(3) in Children With Nutritional Rickets. Wiley Subscription Services, Inc., A Wiley Company, 2010.

Thacher, Tom D., et al. Comparison of Metabolism of Vitamins D(2) and D(3) in Children With Nutritional Rickets. Wiley Subscription Services, Inc., A Wiley Company, 2010.