Yusuf Özkan, Ramis Çolak, Yunus Saral, Başak Kandi Coşkun, Orhan Kürşad Poyrazoğlu
(Endocrinol Res Pract 2005; 9: 1-4)
Yusuf Özkan, Taner Akdere, Emir Dönder
(Endocrinol Res Pract 2004; 8: 35-42)
Ramis Çolak, Yusuf Özkan, Muzaffer Keçeci, Halil Doğan, Hüseyin Ataseven, Şule Cengiz Ulusoy, Necip İlhan
(Endocrinol Res Pract 2004; 8: 9-14)
(Endocrinol Res Pract 2004; 8: 57-63)