The ontario asthma regional variation study : Emergency department visit rates and the relation to hospitalization rates
LOUGHEED, M. Diane ; GARVEY, Nancy ; TO, Teresa ; PATERSON, Nigel A. M ; CHAPMAN, Kenneth R ; CICUTTO, Lisa ; DALES, Robert ; DAY, Andrew G ; HOPMAN, Wilma M ; LAM, Miu ; SEARS, Malcolm R ; SZPIRO, Kim
Chest, 2006-04, Vol.129 (4), p.909-917 [Periódico revisado por pares]Northbrook, IL: American College of Chest Physicians
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