Comparison of the Effect of Observational Learning and Self-Directed Learning in Improving Technical Skills in Nursing Anesthesia Students of Iran: A Quasi-Experimental Study - Mohamadali Zade, Pooya; Arman, Pegah; Shirmohammadi-Khoram, Nasrin; Kareem Muhammad, Ibrahim; Sangi, Siavash; Arian, Mobin (Archives of Anesthesiology and Critical Care, 2025)