To allow for the sequential roll-out of the program, the Champlain LHIN has been divided into 9 smaller geographic regions, referred to from now on as "divisions", using GIS mapping technology. The order in which these divisions begin the program has been randomized, but stratified by the west/central/and east location within the LHIN, so that each division per stratum will have the same probability of beginning the program at any specific time.