Y. Zhang, B. Bi, X. Guo, and S. Zhang, “Analysis of Eradication, Recurrence and Levels of 25-hydroxyvitamin D3 and Interleukin-1β in paediatric patients with Helicobacter Pylori Infection-related Gastritis”, Pak J Med Sci, vol. 36, no. 6, Aug. 2020.