<style face="normal" font="default" size="100%">Venous thromboembolism and combined oral contraceptives: does the type of progestogen make a difference?</style>

Drupal-Bibcite

31<style face="normal" font="default" size="100%">Venous thromboembolism and combined oral contraceptives: does the type of progestogen make a difference?</style><style face="normal" font="default" size="100%">Venous thromboembolism and combined oral contraceptives: does the type of progestogen make a difference?</style>