title: Higher mortality for weekend admissions: quality of care or selection bias?
authors.affiliation: Tuberculosis and Chest Service, Dept of Health, Hong Kong, China cc_leung@dh.gov.hk.
authors.forename: Chi Chiu
authors.initials: CC
authors.lastname: Leung
authors.affiliation: Tuberculosis and Chest Service, Dept of Health, Hong Kong, China.
authors.forename: Lai Bun
authors.initials: LB
authors.lastname: Tai
authors.affiliation: Tuberculosis and Chest Service, Dept of Health, Hong Kong, China.
authors.forename: Irene
authors.initials: I
authors.lastname: Yip
authors.affiliation: Tuberculosis and Chest Service, Dept of Health, Hong Kong, China.
authors.forename: Cheuk Ming
authors.initials: CM
authors.lastname: Tam
mesh_terms: D005260:Female; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D010343:Patient Admission; D011014:Pneumonia / Q000401:mortality*; D029424:Pulmonary Disease, Chronic Obstructive / Q000401:mortality*