Global prevalence of chronic obstructive pulmonary disease: systematic review and meta-analysisMehdi Varmaghani, Farshad Farzadfar, Sahar Saeedi Moghaddam et al.|Eastern Mediterranean Health Journal|2018Cited by 275
Prevalence of Asthma, COPD, and Chronic Bronchitis in Iran: A Systematic Review and Meta-analysis.Mehdi Varmaghani, Abbas Kebriaeezadeh, Farshad Farzadfar et al.|PubMed|2016Cited by 75