Fig. 1.
Definition of “patient area” when including and excluding offer and demand outside. Focus on the IRIS named “Fournes-en-Weppes”- (IRIS no. 592 500 000), the Nord department are circled in blue, whereas neighboring IRIS from the three departments of Somme, Aisne and Pas-de-Calais are yellow. a) without consideration of offer and demand beyond the boundary; b) with consideration of offer and demand beyond the boundary