A. Matsumoto, T. Kamita, Y. Tawaratsumida, A. Nakamura, H. Fukuchimoto, Y. Mitamura, H. Suzuki, T. Munakata, T. ombined Use of Virtual Reality and a Chatbot Reduces Emotional Stress More Than Using Them Separately. JUCS - Journal of Universal Computer Science 27(12): doi: 10.3897/jucs.77237. 2021. 1371-1389