A prospective clinical trial predicting the 95% effective concentration of remifentanil for skull pin fixation using haemodynamic and surgical pleth index monitoring. - Chen, Ying-Tzu; Lai, Yueh-Ting; Lai, Hou-Chuan; Lieu, Ann-Shung; Lee, Meei-Shyuan; Wu, Zhi-Fu (Indian Journal of Anaesthesia, 2025)