“…Nevertheless, these supply ratios still contain some important limitations, because several variations in accessibility within bordering areas are ignored by these ratios. Based on these common ratios, this approach implies that all physicians are created as having equal access and that all communities have the same health needs, regardless of demographics and other conditions regarding access; however, in reality, they are impacted by several factors, such as barriers or conditions to travel, particularly for specific vulnerable populations [21,41,42]. Furthermore, when predefined units are large, most area-based measurements cannot reflect important factors for smaller units within the neighborhood, which may evaluate differences in access within the area [43,44].…”