Styczyńska, Małgorzata, Maciej Wojewódzki, Alicja Cyrzan, Jakub Zalewski, Adam Zysk, Mateusz Ząbek, Martyna Iwanowska, Beata Flis, Adrian Goss, and Bartosz Fronczak. 2026. “Vitamin D, Vitamin B9 (Folic Acid) and Vitamin B12 Status in Bipolar Disorder: Associations With Symptom Severity and Course of Illness”. Journal of Education, Health and Sport 88 (February):68648. https://doi.org/10.12775/JEHS.2026.88.68648.