Personality traits have an effect on pain-related psychological variables in patients with chronic low back pain - Kazuhiro Hayashi; Kenji Miki; Yui Fukushima; Mayuu Iwai; Yukiko Shiro; Tomoko Tetsunaga; Toshifumi Takasusuki; Masako Hosoi; Masao Yukioka; Seiji Okada (PLoS ONE, 2026)