Шекера, О. Г., and Д. В. Мельник. 2017. “The Prevalence of Diseases Among Children Digestive and Peptic Ulcer Disease Duodenum – Urgent Problem of Family Medicine”. Family Medicine, no. 1(69) (January):16-20. https://doi.org/10.30841/2307-5112.1(69).2017.102949.