Funding for this research was provided by:
Päivikki ja Sakari Sohlbergin Säätiö
Anna and Edwin Berger
Skåne County Council’s research and development foundation
The Paediatric Research Foundation
Text and Data Mining valid from 2018-05-03
Received: 9 October 2017
Accepted: 10 April 2018
First Online: 3 May 2018
Ethics approval and consent to participate
: Authorization for the study was obtained from the Ethical committee at the Medical National Council of Angola, Scientific Council of the Faculty of Medicine of Agostinho Neto University and the General Director of Hospital Josina Machel. Before enrollment, the patients or their guardians gave informed consent.
: The authors declare that they have no competing interests.