Participant timeline {13}
PEx
Once enrolled in the PEx Cohort, participants remain in the cohort until they withdraw, or until the project closes (see Criteria for Discontinuation above). The timing of individual PERITS varies between participants. Data collection occurs (1) at enrolment (cohort entry), (2) approximately every 3 months thereafter, and (3) with each PERIT (Fig. Enrolment and data collection timeline for PEx cohort participants