Diurnal Temperature Range and Daily Emergency Room Admissions among the Elderly in Beijing, China

doi: 10.3967/bes2013.010 1. General Hospital of PLA, Beijing 100853, China; 2. Institute of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou 730000, Gangsu, China; 3. College of Atmospheric Science, Center for Meteorological Environment and Human Health, Lanzhou University, Lanzhou 730000, Gangsu, China; 4. School of public health, Ningxia Medical University, Yinchuan, 750004, Ningxia, China Letter to the Editor