PH is a relatively rare disease; most physicians have little or no experience with its diagnosis and treatment. For this reason, referral to a centre specialized in treating PH is encouraged to confirm a diagnosis and ensure that patients receive the best care. Further, some provinces require patients to be followed by a specialist in order to receive coverage for PH-specific medications. Centres specializing in treating PH (adult and pediatric) and CTEPH are in Canada. Their experienced medical teams include PH nurses and specialists such as cardiologists, respirologists, and rheumatologists.