Fig. 4From: An integrated analysis of spatial access to the three-tier healthcare delivery system in China: a case study of Hainan IslandShortest travel time to the three tiers of healthcare institutions. Note: The Tier 1 healthcare institutions are clinics in urban areas and village clinics in rural areas. The Tier 2 healthcare institutions are CHCs in urban areas and THCs in rural areas. The Tier 3 healthcare institutions are hospitalsBack to article page