Funding for this research was provided by:
Yonsei University College of Nursing (6-2016-0050)
Received: 17 April 2018
Accepted: 4 June 2019
First Online: 11 June 2019
Ethics approval and consent to participate
: Before data collection, the trained data collectors explained the aim of the study and obtained written consent from all participants. Participation in the study was voluntary, and each participant was able to withdraw from the study at any time. The institutional research board (IRB) of Yonsei University approved this study (no. 2016–0048-1). The Department of Health and local women’s council of the Quang Tri Province in Vietnam authorized the study. The Department of Health in the Quang Tri Province did not request to submit IRB.
: Not applicable.
: The authors declare that they have no competing interests.