Orbital tightening assessment to evaluate pain and physical discomfort in chlorine-exposed rats: A machine learning based measurement approach. - Gupta, Saurav; Nasser, Wesam; Jadhav, Gajanan R; Johns, Amber J; Zafar, Iram; Ahmad, Aftab; Gu, Jianguo; Ahmad, Shama (Molecular Pain, 2025)