Global prevalence of chronic obstructive pulmonary disease: systematic review and meta-analysis
Mehdi Varmaghani(Mashhad University of Medical Sciences), Farshad Farzadfar(Tehran University of Medical Sciences), Farshad Sharifi(Sharif University of Technology), Sahar Saeedi Moghaddam(Kiel Institute for the World Economy), Elham Heidari(Tehran University of Medical Sciences), Mina Dehghani(Tehran University of Medical Sciences)
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