Text and Data Mining valid from 2018-04-10
Received: 11 October 2016
Accepted: 23 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: This study received ethical clearance from the Institutional Review Board of Muhimbili University of Health and Allied Sciences (MUHAS) in Tanzania. The ethical approval reference numbers are; 2012–09-03/IRB/VOL.III/03 and 2015–09-04/AEC/VOL. X/01. A written informed consent for this study that include data collection and consent to publish the information collected was requested and obtained from the participants and they were assured on their anonymity in publications.
: Not applicable.
: The authors declare that they have no competing interests.
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