Chronic respiratory diseases http://www.who.int/respiratory/en/ data from the World Health Organization 從數據世界衛生組織 WHO.int World Health Organization (WHO) http://www.who.int/respiratory/en/ WHO.int http://www.who.int/respiratory/en/ World Health Organization www.who.int/respiratory/en/Â WHO | Chronic Respiratory Diseases World Health Organization http://www.who.int/respiratory/en/ data from the World Health Organization World Health Organization «Chronic respiratory diseases (CRDs)» Respiratory Diseases OMS – Site de Doenças Respiratórias Crónicas WHO.int over 3 million deaths per year who.int