JAWAD ZAHIR, MUHAMMAD SHAFIQ, MUHAMMAD SALMAN MAQBOOL, MUHAMMAD NADEEM KHAN. Nitrous Oxide in Oxygen and Air in Oxygen for Perioperative Analgesia : A Comparative study. Journal of Rawalpindi Medical College, Rawalpindi, Pakistan, v. 12, n. 2, 2008. Disponível em: https://www.journalrmc.com/index.php/JRMC/article/view/748. Acesso em: 31 oct. 2025.