psychiatric/mental health nursing

Hey guys

I've got a BSc in Public Health and I'm now thinking about getting into psychiatric/mental health nursing. I know that in the UK it is possible to do a 1 year postgrad. in mental health nursing if you have an undergrad. in a health related subject.
However I can't find an equivalent course in Canada. All the courses I found were either 4 year bachelors or postgrads that require you to be a qualified nurse already.
Does anyone know of universities that offer the course I'm looking for? I know this is quite a specific question but all advice is appreciated.

Cheers,
Nics