Received: 21 September 2019
Accepted: 30 December 2019
First Online: 14 January 2020
Ethics approval and consent to participate
: After ethical approval granted by the Institutional Review Board of the University of Bamenda and administrative approval given by the director of the Laquintinie hospital, recruitment was done using admission records.
: Not Applicable.
: The authors declare that they have no competing interest.