2 Department of Surgery, Nakhchivan Autonomous Republic Hospital Nakhchivan, Nakhchivan Autonomous Republic, Azerbaijan.
3 Surgery.
4 School of Medicine, University of Santiago de Compostela, Santiago de Compostela, A Coruña, Spain.
5 Endocrinology and Nutrition Division.
6 Clinical Epidemiology Unit, Galician Healthcare Service (SERGAS), Health Research Institute of Santiago de Compostela (IDIS), Clinical University Hospital of Santiago de Compostela.
7 Center for Research in Molecular Medicine and Chronic Diseases (CIMUS) University of Santiago de Compostela.