 ሁሉም ፈቃደኛ ሠራተኞች ከ 15 እስከ 49 ዕድሜ ያላቸው ሲሆኑ በ 2001 እና በ 2014 መካከል ባለው መደበኛ የሕክምና ምርመራ መርሃግብር ተሳትፈዋል ።
All of the volunteers were between the ages of 15 and 49, and participated in a standard medical examination program between 2001 and 2014.