Mukhtiar Ahmed, Jamil Akhter Munir Ahmad, Muhammad Ali Sheikh, Tariq Latif, and Abdul Qayyum, “Topical Lignocaine with Diltiazem or Glyceryltrinitrate for Paediatric Acute Anal Fissure: A Randomized Clinical Trial”, Proceedings S.Z.M.C, vol. 34, no. 4, pp. 70–75, Jan. 2021.