Simo, Fredy Brice N.
Bigna, Jean Joel http://orcid.org/0000-0001-8018-6279
Kenmoe, Sebastien
Ndangang, Marie S.
Temfack, Elvis http://orcid.org/0000-0001-8189-6555
Moundipa, Paul F.
Demanou, Maurice
Article History
Received: 27 January 2019
Accepted: 19 August 2019
First Online: 20 September 2019
Competing Interests
: The authors declare no competing interests.