Galunska, Bistra T., Daniela I. Gerova, Sonya V. Galcheva, and Violeta M. Iotova. 2016. “Association Between Vitamin D Status and Obesity in Bulgarian Pre-Pubertal Children: A Pilot Study”. International Journal of Research in Medical Sciences 4 (2):361-68. https://doi.org/10.18203/2320-6012.ijrms20160284.