Journal of Preventive Medicine

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In The Name Of God

               Dear Editor in chief of the journal of Preventive Medicine  Dr.Madani

               Mr./Ms.-------------------------------------------------------------------------------------------------

               the authors of -----------------------------------------------------------------------------------------

               certify that

1. This article has not previously published in sny domestic or foregn journal.

2. This article has only been sent to the journal of Preventive Medicine  for consideration and publication and it will not be sent to another journal until the authors received the reviewer and editor in chief’s final comments about the article.

3. This article is accomplished by a teamwork so the rights of all those involved in this research have been observed.

4. During this study all relevant national laws and professional ethics related to research such as the right of participants, organizations and institutions, as well as authors and composers have been observed.