JAMES CHUN-I LEE2018-09-102018-09-102008http://www.scopus.com/inward/record.url?eid=2-s2.0-51349134942&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/335789Global experiences with vardenafil in men with erectile dysfunction and underlying conditionsjournal article10.1111/j.1742-1241.2008.01852.x