Seriu, N., Sasaki, S., Ishida, Y., Kobayashi, Y., Kitamura, T., Mawarikado, Y., Uchihashi, Y., Inagaki, Y., Sho, M., Kido, A. (2026). Evaluation of psychological changes using facial emotion analysis in postoperative rehabilitation treatment for patients with upper gastrointestinal cancer: A prospective study. PLoS ONE. https://doi.org/10.1371/journal.pone.0340914