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• 1. Holick MF, Chen TC. Vitamin D deficiency: a worldwide problem with health consequences–. The American journal of clinical nutrition. 2008;87(4):1080-6. 2. Öğüş E, Sürer H, Kılınç A, Fidancı V, Yılmaz G, Dindar N, et al. D Vitamini düzeylerinin aylara, cinsiyete ve yaşa göre değerlendirilmesi. Ankara Medical Journal. 2014;15(1). 3. Holick MF. Vitamin D deficiency. New England Journal of Medicine. 2007;357(3):266-81. 4. Wacker M, Holick MF. Sunlight and Vitamin D: A global perspective for health. Dermato-endocrinology. 2013;5(1):51-108. 5. Ates S, Sevket O, Ozcan P, Ozkal F, Kaya MO, Dane B. Vitamin D status in the first-trimester: effects of Vitamin D deficiency on pregnancy outcomes. African health sciences. 2016;16(1):36-43. 6. Lerchbaum E, Obermayer-Pietsch B. Mechanisms in endocrinology: Vitamin D and fertility: a systematic review. European Journal of Endocrinology. 2012;166(5):765-78. 7. Halloran BP, Deluca HF. Effect of vitamin D deficiency on fertility and reproductive capacity in the female rat. The Journal of nutrition. 1980;110(8):1573-80. 8. Ozkan S, Jindal S, Greenseid K, Shu J, Zeitlian G, Hickmon C, et al. Replete vitamin D stores predict reproductive success following in vitro fertilization. Fertility and sterility. 2010;94(4):1314-9. 9. Farzadi L, Bidgoli HK, Ghojazadeh M, Bahrami Z, Fattahi A, Latifi Z, et al. Correlation between follicular fluid 25-OH vitamin D and assisted reproductive outcomes. Iranian journal of reproductive medicine. 2015;13(6):361. 10. Saraf R, Morton SM, Camargo Jr CA, Grant CC. Global summary of maternal and newborn vitamin D status–a systematic review. Maternal & child nutrition. 2016;12(4):647-68.