Praja, Z., and E. Fikri. “Correlation of Pediatric Appendicitis Score (Pas) With Appendix Diameter on Children in H. Adam Malik General Hospital Medan and Network Hospital in 2016”. International Journal of Medical Science and Clinical Invention, vol. 5, no. 1, Jan. 2018, pp. 3452-3, doi:10.18535/ijmsci/v5i1.16.