Using provincial client registries for selection of control subjects: lessons learned.
Department of Population Medicine, Ontario Veterinary College, University of Guelph.
B
B
Krenten-Boaretto
J A
JA
Buxton
K
K
Doré
M
M
Fyfe
D
D
Middleton
S
S
McEwen
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