Funding for this research was provided by:
Text and Data Mining valid from 2018-04-20
Received: 21 July 2017
Revised: 23 March 2018
Accepted: 5 April 2018
First Online: 20 April 2018
Compliance with ethical standards
: The study with human volunteers was approved by National Health Sciences Research Committee (NHSRC) of Malawi. All objectives of the study were clearly explained to the participants by medical professionals, and consent was obtained from each volunteer before collecting 10 ml of blood. In cases of minors, written consent was obtained from parents and guardians.
: The authors declare that there is no conflict of interest.