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, e 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.