1. Evidence that increased circulating la 25 dihydroxyvitamin D is the probable cause for abnormal calcium metabolism;Bell, N.H.; Stern, P.H.; Pantzer, E.; Sinha, T.K.; De Luca, H.F.,1979
2. Vitamin D metabolism in hypoparathyroidism;Bj, Lund; OH, Sorensen; Bi, Lund; JE, Bishop; AW, Norman;7 Clin Endocrinol Metab,1980
3. Eritema nudoso par Salmonlosis gastroenterica;Toribio, N.; Perez-Oliva, N.; Quinones, P.A.; Tejerina, J.A.;Actas Dermoszfiliogr,1981