1. Department of Internal MedicineUniversity of ManitobaWinnipegManitobaCanada
2. Department of Community Health SciencesUniversity of ManitobaWinnipegManitobaCanada
3. Department of MedicineMcGill UniversityMontrealQuebecCanada
4. Department of MedicineUniversity of AlbertaEdmontonAlbertaCanada