Drupal-Bibcite31<style face="normal" font="default" size="100%">Cost-Effectiveness of Antihypertensive Therapy in Patients Older Than 80 Years: Cohort Study and Markov Model</style><style face="normal" font="default" size="100%">Cost-Effectiveness of Antihypertensive Therapy in Patients Older Than 80 Years: Cohort Study and Markov Model</style>