About the Authors

Betty Nannyonga, Joseph Y. T. Mugisha, Livingstone S. Luboobi
Department of Mathematics, Makerere University, Kampala, Uganda

David J. T. Sumpter
Mathematics Department, Uppsala University, Uppsala, Sweden

Corresponding Author

bnk@math.mak.ac.ug

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: BN DJTS. Wrote the paper: BN DJTS. Model analysis: JYTM LSL.