Ahmad, S. J., A. R. Ahmed, K. F. Kowalewski, F. Nickel, K. Rostami, C. J. Stocker, S. M. Hakky, R. Archid, D. McWhinnie, A. Mohajer-Bastami, D. Skiadopoulos Seimenis, S. Ahmad, S. Mansour, M. H. Ahmed, D. Mital, and A. K. Exadaktylos. “Citation Classics in General Medical Journals: Assessing the Quality of Evidence; A Systematic Review”. Gastroenterology and Hepatology from Bed to Bench, vol. 13, no. 2, Mar. 2020, pp. 101-14, doi:10.22037/ghfbb.v13i2.1774.