7Anand S, B, rnighausen T. Human resources and health outcomes : cross -- country econometric study [J ]. Lancet 2004,364 : 1603-1609.
8Dolea C. Stormont L,Shaw D,et al. Increasing access to health workers in remote and rural areas through improved retention [EB/OL]. Geneva : World Health Organization, http://www.who. int/hrh/migration/background -- paper, pdf. 2009-6-12.
9Travis P, Hennett S, Haines A,et al. Overcoming health-systems constraints to achieve the Millennium Development Goals [J]. Lancet, 2004,364 : 900-906.
