4 ms·yes, because all these third world countries have a good record of keeping a good log on what's going on...by octix 12y agoyes, because all these third world countries have a good record of keeping a good log on what's going on...mc32 12y agoNo but, cynically, they do provide the populations to study the effects of these things on people.rjsw 12y agoMaybe their populations are dying of something else before the effects would become clear.