Effect of Cryoanalgesia on Post-Thoracotomy Pain - Momenzadeh, Sirous; Elyasi, Hedayatollah; Valaie, Naser; Radpey, Badiozaman; Abbasi, Azizollah; Nematollahi, Fatemeh; Mohammadinasab, Hossein (Acta Medica Iranica)