En ce qui concerne les usagers de drogues par injection, plus d'un quart vivraient en Europe occidentale et orientale et un quart en Asie de l'Est et du Sud-Est.
Among estimated injecting drug users, more than a quarterwere in Western and Eastern Europe and a quarter in East and South-East Asia.
How many English words do you know?
Test your English vocabulary size, and measure how many words you know.