[1] Peoples Hosp Hengshui, Dept Infect Dis, Hengshui, Peoples R China
[2] Peoples Hosp Hengshui, Dept Nutr, Hengshui, Peoples R China
[3] Peoples Hosp Hengshui, Dept Geriatr, Hengshui, Peoples R China
[4] Peoples Hosp Hengshui, Dept Resp & Crit Care Med, 180 Middle Renmin Rd, Hengshui 053000, Hebei, Peoples R China