Additions or deletions of participating sites that provide an educational experience required for all residents of one month FTE (four weeks) or more must be submitted through the Accreditation Data System (ADS). Information to be entered in ADS for each participating site besides that in the PLA includes the distance (in miles) and time (in minutes) from the primary teaching site and whether the participating site is integrated (for those specialties that use that term). Changes in sites that provide only elective experiences are not required to be submitted through ADS but may be entered, especially if needed for.