G. Akowuah| Ghana Field Epidemiology and Laboratory Training Programme | cirjorge@gmail.com  
S Sackey | Ghana Field Epidemiology and Laboratory Training Programme |sackey492003@yahoo.co.uk
M Odikro | Ghana Field Epidemiology and Laboratory Training Programme | odikrom@gmail.com
E Kenu | Ghana Field Epidemiology and Laboratory Training Programme | Ernest_kenu@yahoo.com