Kehler, T.; Kezele, T. G.; Fužinac-Smojver, A.; Kauzlarić-Živković, T. Association of Vitamin D Insufficiency and Low Physical Activity With Fatigue, Headaches and Psychological Distress in College Students, North-Mediterranean Croatia – a Pilot Study. Paediatr Croat 2021, 65 (2), 59-66. https://doi.org/10.13112/PC.2021.10.