Received: 25 January 2019
Accepted: 6 September 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: Ethical clearance and approval was obtained from the School of Biomedical and laboratory Sciences, University of Gondar ethical review committee after submission of the proposal, through an official letter with reference number SBMLS/145/2017. Written permission was obtained from the Debre Markos hospital. Verbal and written informed consent was obtained from pregnant women before data collection. Additionally, the confidentiality of information was assured throughout the study.
: Not applicable.
: The authors declare that they have no competing interests.