Combining phone and postcard brief contact interventions for preventing suicide reattempts: A quasi-randomized controlled trial. (September 2019) - Matsubara, Toshio; Matsuo, Koji; Matsuda, Atsuko; Ogino, Yuko; Hobara, Teruyuki; Wakabayashi, Yusuke; Kawano, Michihide; Tsuruta, Ryosuke; Watanabe, Yoshifumi; Nakagawa, Shin