Here's an interesting footnote:
 Plaisier (Ibid., 341) cites a study of the Chinese Academy of Social Science affirming that 69% of the people converted to Christianity in the last two decades indicated the healing of a family member or themselves. See also http://www.china.org.cn/china/2010-08/12/content_20690649.htm.
The entire paper is worth reading.
HT: Steve Hays.