@ARTICLE {OMOBOWALE:2013, title = {Institution and public healthcare facility cleanness in Nigeria: a principal-agent approach}, author = {Omobowale, O. A. * and Dontsop-Nguezet, P. and Amao, I. *}, journal = {Journal of African Development}, year = {2013}, volume = {15}, number = {1}, pages = {1--30}, }