Sarrafi, Yaghoub
Mehrasbi, Ebrahim
Mashalchi, Seyyedeh Zohreh
Article History
Received: 30 March 2015
Accepted: 12 September 2015
First Online: 6 October 2015
Compliance with ethical standards
: We confirm that the manuscript has been submitted solely to this journal and is not published, in press, or submitted elsewhere. We confirm that all the research meets the ethical guidelines, including adherence to the legal requirements of the study country.
: We certify that we have no affiliation with or financial involvement with any organization or entity with a direct financial or any other interest in the subject matter or materials discussed in the manuscript. We declare no conflicts of interest.