Cover concerns

[摘要] I am writing to add to Dr Spier’s comments regarding the February 2010 cover of Canadian Family Physician. I agree with Dr Spier, who notes that this child is too young to use a metered-dose inhaler alone. However, I have 2 additional concerns:First, the asthma articles in the February issue (

[学科分类] 卫生学

[关键词] friction factors;wind measurements;tsunami