C. Ochoa Sangrador and A. Vázquez Blanco, “Day-care center attendance and risk of Asthma-A systematic review”, Allergol Immunopathol, vol. 46, no. 6, pp. 578–584, Dec. 2018, Accessed: Jun. 03, 2026. [Online]. Available: https://all-imm.com/index.php/aei/article/view/372