Al-Dughaishi, Malika, Asem Shalaby, Khawla Al-Ribkhi, Ammar Boudaka, Mohamed-Rachid Boulassel, and Jumana Saleh. 2019. “The Value of Programmed Death Ligand 1 Expression in Cancer Patients Treated With Neoadjuvant Chemotherapy”. Sultan Qaboos University Medical Journal 19 (4):e277-283. https://doi.org/10.18295/squmj.2019.19.04.002.