About the Authors

Christian Akem Dimala

akdimch@yahoo.com

Affiliation London School of Hygiene and Tropical Medicine, London, United Kingdom

Julius Atashili

Affiliation Faculty of Health Sciences University of Buea, Buea, Cameroon

Josephine C. Mbuagbaw

Affiliation Faculty of Health Sciences University of Buea, Buea, Cameroon

Akam Wilfred

Affiliation Faculty of Health Sciences University of Buea, Buea, Cameroon

Gottlieb L. Monekosso

Affiliation Faculty of Health Sciences University of Buea, Buea, Cameroon

Competing Interests

The authors confirm that co-author Julius Atashili is a PLOS ONE Editorial Board member. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: CAD JA GLM JCM. Performed the experiments: CAD JA AW. Analyzed the data: CAD JA. Contributed reagents/materials/analysis tools: CAD JA. Wrote the paper: CAD JA AW GLM JCM.