Zeydabadi, Alireza
Askari, Jafar
Vakili, Mahmood
Mirmohammadi, Seyyed Jalil
Ghovveh, Mohammad Ali
Mehrparvar, Amir Houshang http://orcid.org/0000-0002-7319-3750
Article History
Received: 20 February 2018
Accepted: 18 September 2018
First Online: 26 September 2018
Compliance with ethical standards
:
: This study was an occupational medicine residency thesis in Shahid Sadoughi university of medical sciences. We did not have any source of funding. The study has been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The study was approved by the ethics committee of the university. An informed consent was obtained from all participants.
: The authors declare that they have no conflict of interest (financial or non-financial).