We studied litter size variation in a population of Richardson's ground squirrels (Spermophilus richardsonii) in Alberta, Canada, from 1987 to 2004. Litter... TS Risch,GR Michener,FS Dobson - 《Ecology》 被引量: 77发表: 2007年 Seasonal patterns of nest defence by Baird's sandpipers Parental...
Cochrane Child Health, Department of Pediatrics, University of Alberta, Edmonton, AB, Canada Sarah A Elliott, Denise Thomson, Katrina Williams, Ricardo M Fernandes & Lisa Hartling School of Pediatrics, Royal Children’s Hospital, Melbourne, VIC, Australia Katrina Williams Department of Pediatrics, San...
1 McMaster University, Hamilton, Canada, 2 Canadian Neurosurgery Research Collaborative (CNRC), Canada, 3 Pediatric Brain Tumour Study Group (PBTSG), Hamilton, Canada, 4 University of Alberta, Edmonton, Canada, 5 University of Calgary, Calgary, Canada, 6 Dalhousie University, Halifax, Canada Bac...
We extracted individual records from 555 household sample survey and census sources. Records came in the form of either summary birth histories (SBHs) or complete birth histories (CBHs). All input data were subject to quality checks, which resulted in the exclusion of 82 surveys and censuses owi...
CHILD Cohort Study protocols were approved by the Human Research Ethics Boards at McMaster University, the Hospital for Sick Children, and the Universities of Manitoba, Alberta, and British Columbia. Informed Consent Statement Informed consent was obtained from all participating mothers at enrollment. ...