Pathak A, Gupta A, Rathore A and Vishwanath S (2018) “Carcinoma of the Unknown Primary (CUPS) - Knowing the Unknown”, World Journal of Pharmaceutical Sciences, 6(1), pp. 40–46. Available at: https://wjpsonline.com/index.php/wjps/article/view/carcinoma-unknown-primary-knowing-unknown (Accessed: 26 September 2025).