Semen MO, Lychkovska OL, Tyrkus MY, Kaminskyy DV, Yelisyeyeva OP. Association between Val158Met polymorphism in the COMT gene with anxiety and heart rate variability in children with irritable bowel syndrome. Zaporozhye Medical Journal [Internet]. 2023Sep.28 [cited 2024Jul.3];25(5):439-46. Available from: http://zmj.zsmu.edu.ua/article/view/278878