Effect of social factors on winter hospital admission for respiratory disease: a case-control study of older people in the UK. (British journal of general practice : the journal of the Royal College of General Practitioners, 2008)

(untitled) - Jordan, R; Hawker, J; Ayres, J; Adab, P; Tunnicliffe, W; Olowokure, B; Kai, J; McManus, R; Salter, R; Cheng, K