Khatiban, Mahnaz, Saboor Hosseini, Ali Bikmoradi, Ghodratollah Roshanaei, and Arezou Karampourian. 2015. “Occupational Burnout and Its Determinants Among Personnel of Emergency Medical Services in Iran”. Acta Medica Iranica 53 (11), 711-16. http://acta.tums.ac.ir/index.php/acta/article/view/5216.