Yavuz Ozbey, M., E. Topal, H. Ulutas, and M. Reha Celik. “Foreign-Body Aspiration Mimicking Asthma in Pre-School Age Group: A Case Report”. Annals of Medical Research, vol. 26, no. 1, May 2021, pp. 0121-2, http://www.annalsmedres.org/index.php/aomr/article/view/1395.