The mysterious illness that has hit scores of schoolchildren in &to=http://english.pravda.ru/main/18/87/344/16495_chechnya.html' target=_blank>Chechnya, fueling speculation that it could be linked to a nerve gas, is of psychological origin and likely has been caused by stress in the fighting-plagued Russian republic, doctors said Friday.
About 80 people, including 58 children, fell ill this week in several towns with breathing trouble, headaches and cramps, prompting authorities to close schools.
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