Drake MJ 1, Chapple C 2, Sokol R 3, Oelke M 4, Traudtner K 5, Klaver M 5, Drogendijk T 5, Van Kerrebroeck P 6 ; NEPTUNE Study Group Long-term safety and efficacy of single-tablet combinations of solifenacin and tamsulosin oral controlled absorption system in men with storage and voiding lower urinary tract symptoms: results from the NEPTUNE Study and NEPTUNE II open-label extension.