Factors Associated with Dual Practice in Surgery Specialists: Application of Multi-Level Analysis on National Registry Data - BAYAT, Mahboubeh; KHALILNEJAD, Roghaye; AKBARI-SARI, Ali; HARIRCHI, Iraj; SALEHI ZALANI, Gholamhossein; MIRBAHAEDDIN, S. Elmira; KHODADOST, Mahmoud; JAFARI POOYAN, Ebrahim; YASERI, Mehdi; SHOKRI, Azad (Iranian Journal of Public Health, 2019)