Magbagbeola  Dairo, Department of Epidemiology and Medical Statistics, Faculty of Public Health, College of Medicine University of Ibadan, drdairo@yahoo.com.
Yusuff  Hakeem, Ministry of Health, Abeokuta, Ogun State, Nigeria, abiolafamily@yahoo.com.
Olukemi Olugbade, Department of Community Health, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria, titilope_nc@yahoo.com.
 Muhammad  Balogun, African Field Epidemiology Network, Abuja, Nigeria, msbalogun@afenet.net.