Erratum to: Patient preferences for treatment of castration-resistant prostate cancer in Japan: a discrete-choice experiment oleh Hiroji Uemura, Nobuaki Matsubara, Go Kimura, Akito Yamaguchi, Dianne Athene Ledesma, Marco DiBonaventura, Ateesha F. Mohamed, Enrique Basurto, Ian McKinnon, Ed Wang, Kristen Concialdi, Aya Narimatsu, Yasuko Aitoku