Article History
Received: 1 February 2019
Accepted: 11 April 2019
First Online: 27 April 2019
Compliance with ethical standards
:
: Ethical clearance to undertake the study was obtained from Addis Ababa University, College of Health Sciences-Institutional Review Board Office. Informed consent to participate in the study was obtained. For this, subject information sheet and informed consent letter were attached to each questionnaire. Participants were informed that participating is voluntarily and has no risk or harm. The right of the respondent to withdraw from the interview or not to participate was respected. For those houses with poorly ventilated houses and biomass-dependent households were informed about the health risks of poor house ventilation and biomass fuel use.
: The authors declare that they have no conflict of interest.