Khan, M. R. K., M. N. Begum, S. Islam, A. F. M. A. Islam, R. U. Ahmed, and M. H. A. Khan. “Z- Plasty: An Effective Technique for Pilonidal Sinus”. Journal of Dhaka Medical College, vol. 28, no. 2, Jan. 2021, pp. 164-71, doi:10.3329/jdmc.v28i2.51152.