Semen MO, Lychkovska OL, Semen VD, Yelisieieva OP. Heart rate variability and trait anxiety in children with irritable bowel syndrome: is there a link?. Zaporozhye Medical Journal [Internet]. 2022Oct.22 [cited 2024May3];24(5):547-55. Available from: http://zmj.zsmu.edu.ua/article/view/256942