As far as I know these are the first ever formal practice guidelines, published in CMAJ. Unfortunately, the document is closed access, and I don't know of any other publication where the guidelines are freely available. Medscape has published a commentary here, and although it lists many of the recommendations it lacks important nuances of the original document. It would be well worth the effort to get the full text. If you don't subscribe to CMAJ your medical librarian could help or you could access the full article via MD Consult.