Fig. 1From: Equity and efficiency of medical service systems at the provincial level of China’s mainland: a comparative study from 2009 to 2014The geographical location of each DMU in the China’s mainland. There are 31 provincial units in the China’s mainland, the number of the provincial units in the east, the central and the west was 11, 8 and 12 respectively. In this picture, the eastern region was painted with red color, the central with green and the west with blueBack to article page