Validity and reliability of the Critical-Care Pain Observation Tool (CPOT) for critically ill pediatric patients - Haruhiko Hoshino; Mitsuki Ikeda; Yujiro Matsuishi; Yuki Enomoto; Nobutake Shimojo; Misaki Kotani; Shunsuke Kobayashi; Takahiro Kido; Satomi Hayashi; Yoko Furuya; Yoshiaki Inoue (PLoS ONE, 2025)