You tried going to https://postgrad.med.ubc.ca/wp-content/uploads/2021/09/011-Leave-of-Absence-Policy-PGME-Policies-and-Procedures_PGMEC-approved-Sept.-7-2021.pdf, and it doesn't exist. All is not lost! You can search for what you're looking for.
https://postgrad.med.ubc.ca/wp-content/uploads/2021/09/011-Leave-of-Absence-Policy-PGME-Policies-and-Procedures_PGMEC-approved-Sept.-7-2021.pdf