Fig. 1From: Unique characteristics of G719X and S768I compound double mutations of epidermal growth factor receptor (EGFR) gene in lung cancer of coal-producing areas of East Yunnan in Southwestern ChinaA map of 9 counties in Qujing City has been shown to the township. The solid black square (â– ) indicates the different towns in the coal-producing areas. The Yunnan province map is on the left, and the Guizhou province map is on the rightBack to article page