Document is current

Article History

Received: 10 July 2018

Accepted: 31 August 2018

First Online: 11 September 2018

Ethics approval and consent to participate

: Ethics approval was obtained from the Institutional Ethical Review Board at St. John’s Medical College and Hospital (reference 38/2013) and Committee on Human Research, University of California, San Francisco (reference 125,781). Informed consent to participate in this study is obtained from all participants. Interested and eligible participants receive information about the study verbally as well as in written form. Participants are informed that participation is voluntary, there are no negative consequences for refusing to participate, and that consent can be withdrawn at any time during the study without any repercussions. Interested participants provide written consent. Illiterate participants have an option of providing verbal consent or a thumb print and a witness, unaffiliated with the study, also signs the consent form.

: Not applicable.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.