Primary Care Unit Department of Public Health and Primary Care University of Cambridge Cambridge UK;
Nottingham Centre for the Advancement of Research into Supportive Palliative and End of Life Care School of Health Sciences University of Nottingham Nottingham UK;
Primary Care Unit Department of Public Health and Primary Care University of Cambridge Cambridge UK;
中国医学科学院北京协和医院老年医学科;
中国医学科学院北京协和医院老年医学科;
