[1] Chengdu Med Coll, Chengdu, Peoples R China
[2] Chengdu Med Coll, Affiliated Hosp 1, Chengdu, Peoples R China
[3] Univ Sydney, Sch Med Sci, Biomed Informat & Digital Hlth, Sydney, NSW, Australia
[4] Chengdu Jinniu Dist Peoples Hosp, Chengdu, Peoples R China