The Diagnostic Yield of Thyroid Function Tests and their Cost-effectiveness in the Student Clinic at Sultan Qaboos University : Retrospective chart review oleh Kawther El Shafie, Asila Al-Shaqsi, Badriya Al-Mahrouqi, Hadia Al Lawati, Shyam S Ganguly, Samir Al Adawi, Mohammed Al Shafaee