00539nam a2200085Ia 4500100001800000245010000018260000900118520030700127583001900434  aTollman, S.M.  aHealth system reform and the role of field sites based upon demographic and health surveillance  c2000  aExplores the characteristics and defining features of field sites for demographic and health surveillance in low-income and middle-income countries.  Argues that many currently active sites have a largely untapped potential for contributing substantially to national and subnational health development.  c2/14/01kJOY_D