Elin Olaug Rosvold1, Reidar Tyssen. 1. Institute of General Practice and Community Medicine, Faculty of Medicine, University of Oslo, Blindern, N-0318 Oslo, Norway. e.o.rosvold@medisin.uio.no
Authors: Julie Y Chen; Eileen Y Y Tse; Tai Pong Lam; Donald K T Li; David V K Chao; Chi Wai Kwan Journal: BMC Public Health Date: 2008-05-28 Impact factor: 3.295