Al Farooq , Md Abdullah, et al. “Comparison Between Preoperative Image Guided Biopsy and Open Biopsy in Clinically Labeled ‘Unresectable Carcinoma Pancreas’”. Journal of Chittagong Medical College Teachers’ Association, vol. 23, no. 2, Mar. 2013, pp. 53-57, doi:10.3329/jcmcta.v23i2.56841.