Javed, S. .; Waqar, S. .; Sharif, H. .; Chaudhry, M. .; Fatima Kiyani, Y. . Assessment of Preoperative Anxiety Among Patients of Open-Heart Surgery at Cardiac Centres of Rawalpindi and Islamabad: Preoperative Anxiety Among Patients of Open-Heart Surgery. PJHS 2022, 3, 126-130.