Ahmadzadeh Amiri, Amir, Kasra Karvandian, Ali Ahmadzadeh Amiri, and Aida Zeinali. 2020. “Anxiety in the Operating Room Before Elective Surgery”. Acta Medica Iranica 58 (4), 161-65. https://acta.tums.ac.ir/index.php/acta/article/view/8122.