P. V. . Thức, H. T. . Thuận, L. V. . Dũng, C. M. . Đức, and P. S. . Hùng, “Cost for treatment of obstetric complications at Nghe An Obstetrics and Children’s Hospital in the period of 2019 – 2020”, TC YHDP, vol. 32, no. 1, pp. 352–357, Feb. 2022.