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Article History

Received: 29 November 2017

Accepted: 24 July 2018

First Online: 6 August 2018

Ethics approval and consent to participate

: The research proposal was approved by the Research Review Board affiliated with Qazvin Faculty of Nursing and Midwifery (decree code: IR.QUMS.REC.1394.351 in the Ethics Committee affiliated with Qazvin University of Medical Sciences). Permissions to enter health and medical centers were obtained from authorities of Qazvin University of Medical Sciences. Next, the researcher introduced himself to the women. After expressing objectives, assuring the participants about confidentiality of their data and possibility of withdrawing from the study, the written informed consent form was signed by those women who were willing to participate in this research.

: Not applicable.

: The authors declare that they have no competing interests.

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