Department of Nursing The PLA General Hospital Beijing 100853 China;
Department of Nursing The PLA General Hospital Beijing 100853 China;
Department of Nursing The PLA General Hospital Beijing 100853 China;
Department of Nursing The PLA General Hospital Beijing 100853 China;
Department of Nursing The PLA General Hospital Beijing 100853 China;
Circumstances; Falls; Frail; Elderly; Home care;