Mohajerzadeh, L., Zakeri, A. , Zanganeh kia, M., Khaleghnejad Tabari, A. and Dara, N. 2020. High Dose Botox Injection for Patients with Internal Anal Sphincter Achalasia Persistent to Posterior Internal Anal Sphincter Myectomy. Iranian Journal of Pediatric Surgery. 6, 2 (Dec. 2020), 66–73. DOI:https://doi.org/10.22037/irjps.v6i2.31946.