M. Yusuf, K. Kulsum, and J. A. Gianty, “The Correlation between Pre-operative Leukocyte Levels and Length of Stay in Appendicitis Patients after an Appendectomy at Dr. Zainoel Abidin Hospital 2019–2020”, Open Access Maced J Med Sci, vol. 10, no. B, pp. 2239–2244, Nov. 2022.