1. Compston, J. E., Horton, L. W. L., Laker, M. F., Ayers, A. B., Woodhead, J. S., Clemens, T. L., Fraher, L., Pilkington, T. R. E.: Bone disease after jejunoileal bypass for obesity: response to oral alpha-hydroxyvitamin D3 therapy. In: Norman, A. W., Schaefer, K., Herrath, D. V., Grigoleit, H. G., Coburn, J. W., Deluca, H. F., Mawer, E. B., Suda, T. (eds.): Vitamin D: Basic Research and Its Clinical Application, pp. 1095–1098. Walter de Gruyter, Berlin, 1979
2. Mosekilde, L., Melsen, F., Hessov, I., Christensen, M. S., Lund, Bj., Lund, Bi., Sørensen, O. H.: Low serum levels of 1,25-dihydroxyvitamin D and histomorphometric evidence of osteomalacia after jenuno-ileal bypass for obesity, Gut21: 624–631, 1980
3. Parfitt, a. M., Miller, M. J., Frame, B., Villanueva, A. R., Rao, D. S., Oliver, I., Thomson, D. L.: Metabolic bone disease after intestinal bypass for treatment of obesity, Ann. Intern. Med.89:193–199, 1978
4. Teitelbaum, S. L., Halvorson, J. D., Bates, M., Wise, L., Haddad, J. G.: Abnormalities of circulating 25-OH vitamin D after jejunoileal bypass for obesity, Ann. Intern. Med.86:289–293, 1977
5. Hey, H., Lund, Bi., Sørensen, O. H., Lund, Bj., Christensen, M. S.: Impairment of vitamin D and bone metabolism in patients with bypass operation for obesity, Acta Med. Scand. [Suppl.]624:73–78, 1979