Response to 'Efficacy and safety of bright light therapy for bipolar depression'. Issue 7 (9th May 2020) - Takeshima, Masahiro; Utsumi, Tomohiro; Aoki, Yumi; Wang, Zhe; Suzuki, Masahiro; Okajima, Isa; Watanabe, Norio; Watanabe, Koichiro; Takaesu, Yoshikazu