Development of a 3‐Day Intervention Program for Family Members of Hikikomori Sufferers1. - Kubo, Hiroaki; Urata, Hiromi; Sakai, Motohiro; Nonaka, Shunsuke; Kishimoto, Junji; Saito, Kazuhiko; Tateno, Masaru; Kobara, Keiji; Fujisawa, Daisuke; Hashimoto, Naoki; Suzuki, Yuriko; Honda, Yoko; et al. (Japanese Psychological Research, 2023)