TAYYIBA AKHTER , JUNAID KHAN LODHI, ASIM MALIK , RANA SHAKIL AHMAD , . 240 Original Article Ultrasound Scoring System for Pre-Operative Anticipation of Difficult Laparoscopic Cholecystectomy. Journal of Rawalpindi Medical College, Rawalpindi, Pakistan, 2018. Disponível em: http://journalrmc.com/index.php/JRMC/article/view/925. Acesso em: 3 nov. 2025.