Using provincial client registries for selection of control subjects: lessons learned.
Krenten-Boaretto
B
B
Department of Population Medicine, Ontario Veterinary College, University of Guelph.
Buxton
J A
JA
Doré
K
K
Fyfe
M
M
Middleton
D
D
McEwen
S
S
D002170:Canada / Q000453:epidemiology; D016022:Case-Control Studies; D004196:Disease Outbreaks; D006801:Humans; D012042:Registries; D012107:Research Design; D012478:Salmonella Food Poisoning / Q000453:epidemiology*; D013689:Telephone