Feng, Ziyun Feng-Hsuan, Liu, Division of Endocrinology and Metabolism, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University, College of Medicine, Taiwan Ferlito, Alfio Fernandes, Sara Fernandez, Socorro, University Veracruzana. Fernández-Soto, María L. Ferreira, Ana Bernardo Ferreira, Inês Ferreira, Sofia Ferreira, Sofia (Portugal) Ferreira, Teresa C. Ferreras, Cristina Fica, Simona, Department of Endocrinology, University of Medicine and Pharmacy “Carol Davila”, Bucharest, Romania Fica, Simona Fichna, Marta Fichna, Marta, Department of Endocrinology, Metabolism and Internal Medicine Poznań University of Medical Sciences (Poland) Fichna, Marta, Poznan University of Medical Sciences Fichna, Piotr Fichna, Piotr, Department of Paediatric Diabetes and Obesity, Poznan University of Medical Sciences, Poland Fichna, Piotr Fichna, Piotr, Poznan University of Medical Sciences (Poland) Fiema, Mateusz Fighera, Tayane Muniz, Endocrinology Division, Hospital de Clinicas, Federal University of Parana (SEMPR) Figueiredo, Ana Abrantes Fila-Daniłow, Anna, Department of Medical Genetics, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice