Secular trends of life expectancy and disability-free life expectancy at age 65 and associated gender and area-level socioeconomic inequalities in Hong Kong: a serial cross-section... oleh Gary Ka-Ki Chung, Michael Marmot, Irene Yuk-Ying Ho, Siu-Ming Chan, Eric Tsz-Chun Lai, Samuel Yeung-Shan Wong, Eng-Kiong Yeoh, Jean Woo, Roger Yat-Nork Chung