DR. FAHEEM AHMAD PATLOO; DR. MUSTAFA KAMAL; DR. AMBREEN QURESHI; DR. MEHNAZ HABIB; DR. SHAIQA MANZOOR. EFFICACY OF ULTRASOUND-GUIDED OBLIQUE SUBCOSTAL TRANSVERSUS ABDOMINIS PLANE BLOCK (OSTAP BLOCK) WITH ROPIVACAINE FOR POSTOPERATIVE ANALGESIA IN LAPAROSCOPIC CHOLECYSTECTOMY – A PROSPECTIVE OBSERVATIONAL STUDY. Journal of Population Therapeutics and Clinical Pharmacology, [S. l.], v. 31, n. 9, p. 623–631, 2024. DOI: 10.53555/3nemb660. Disponível em: https://jptcp.com/index.php/jptcp/article/view/7819. Acesso em: 10 oct. 2025.