Drupal-Bibcite31<style face="normal" font="default" size="100%">Trends in sexually transmitted infections in general practice 1990-2000: population based study using data from the UK general practice research database</style><style face="normal" font="default" size="100%">Trends in sexually transmitted infections in general practice 1990-2000: population based study using data from the UK general practice research database</style>