The sample size was calculated automatically using Coverage Survey Builder (CSB) tool in microsoft excel. 
Coverage Survey Builder (CSB)
The sample size was calculated automatically using Coverage Survey Builder (CSB) tool in microsoft excel. 
Microsoft Excel
EPI-INFO 7.0 and SPSS version 20 was used for further analysis of survey data.



EPI-INFO 7.0
EPI-INFO 7.0 and SPSS version 20 was used for further analysis of survey data.



SPSS version 20