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I think this question need to be answered at several levels. Starting from the global level, some conditions like diarrhea, starvation, some infectious diseases, materna ... Voir Plus
Agreed to Mr. Ahmed Sharab...... my compliments to him on very nice and useful elabration of the topic. As far as the my region is ocncerned, the socio-economic conditio ... Voir Plus
The answer can vary as per demographic changes, under develop to developing countries, close to open culture societies, lower to upper socioeconomic status and ignoranc ... Voir Plus
Emergence of multi drug resistant strains of bacteria
many things like: diet. exercise. healthy food. working, i think this one is the most effect.