The dangers of incense burning: COPD in Saudi Arabia
Feisal A Al-Kassimi
Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
We read with great interest the article titled "Chronic obstructive pulmonary disease: hospital and intensive care unit outcomes in the Kingdom of Saudi Arabia"1 and we would like to comment on its methodology.
View original paper by Alaithan and colleagues.
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