Stoieva, T. V., Dzhagiashvili, O. V., Prokhorova, S. V., Gudz, V. A., & Yemelyanova, O. Y. (2018). Collagen-associated syntropy in children with functional disorders of the digestive system. Zaporozhye Medical Journal, (3). https://doi.org/10.14739/2310-1210.2018.3.130520