Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;
Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;
Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;
Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;
Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;
Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, 050011;