Social Insurance Institution / office of Population Censuses and Surveys Longitudinal Study / National Board of Taxation / office of Population Censuses and Surveys / University of Helsinki / Academy of Finland / Social Science Research Council / Population Research Unit / /
264 26ournal of Epidemiology and Community Health 1996;5O:Mortality after death of spouse in relation to duration of bereavement in Finland Pekka Martikainen, Tapani Valkonen