Refaat Alam R, Ibrahim Elemam Elashri N. Effectiveness of nursing interventions on level of anxiety, stress, and depression of elderly patients undergoing upper gastrointestinal endoscopy. IJANS [Internet]. 2020 May 7 [cited 2024 Nov. 23];9(1):20-8. Available from: https://sciencepubco.com/index.php/IJANS/article/view/30560