Caffeine Accelerates Emergence from Isoflurane Anesthesia in Humans: A Randomized, Double-blind, Crossover Study - Fong, Robert; Wang, Lingzhi; Zacny, James P.; Khokhar, Suhail; Apfelbaum, Jeffrey L.; Fox, Aaron P.; Xie, Zheng (Anesthesiology (Philadelphia), 2018)