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Comparison of maternity experiences of Canadian-born and recent and non-recent immigrant women: findings from the Canadian Maternity Experiences Survey.
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O'Brien, B., Kaczorowski, J., Chalmers, B., Lee, L., Kingston, D., Dzakpasu, S., O'Campo, P., Heaman, M. I.
Objective: To compare the maternity experiences of immigrant women (recent, ≤ 5 years in Canada; non-recent > 5 years) with those of Canadian-born women. Methods: This study was based on data from the Canadian Maternity Experiences Survey of the Public Health Agency of Canada. A stratified random...
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2009
Abstract: Speciation has been considered as a primary process contributing to species diversity, but its contribution to the diversity of local communities has not been fully appreciated. Based on the theory of classic island biogeography, we derived a model for the number of endemic species as a...
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2005
Connor, E.F., Srivastava, D., Gaston, K.J., He, F.
While local processes (e.g., competition, predation, and disturbance) presumably cause species exclusion and thus limit diversity in individual communities, regional processes (e.g., historical events, immigration, and speciation) are assumed to provide a source of species to colonize and thus...