Each regional CPCSSN network performs the data extraction for sentinels in their local network, with the data stored on a secure local server at Queen’s University and/or on a secure server within the appropriate academic institution (e.g. university). Once the data are cleaned and processed locally, regional data from each network is merged into the national repository stored at the Centre for Advanced Computing at Queen’s University. This is a highly secure, remote-access facility with multiple administrative, technical and physical safeguards https://cac.queensu.ca/overview/.