Effect of dual practice on service delivery time by surgeons in the Islamic Republic of Iran: multi-level analysis of a national survey, 2016. - Bayat M; Shokri A; Khalilnezhad R; Mirbahaeddin E; Khodadost M; Fattahi H; Zalani GS; Harirchi I; Yaser M; Jaafaripooyan E; Akbari-Sari A (Eastern Mediterranean health journal = La revue de sante de la Mediterranee orientale = al-Majallah al-sihhiyah li-sharq al-mutawassit, 2018)