SEASONAL VARIATION IN HbA1c AND 25(OH) VITAMIN D CONCENTRATIONS IN THE TURKISH POPULATION: COULD RAMADAN BE CHANGING EXPECTATIONS? - ÇALIKOĞLU, Fulya; HACIŞAHİNOĞULLARI, Hülya; KILIÇARSLAN, Ahmet Faruk; AKAS, Reyhan; DİRİCAN, Ahmet; KUBAT ÜZÜM, Ayşe; ÖMER, Beyhan; GENÇ, Sema (Journal of Istanbul Faculty of Medicine / İstanbul Tıp Fakültesi Dergisi, 2022)