https://www.pnas.org/doi/10.1073/pnas.1502280112 https://www.pnas.org/doi/10.1073/pnas.1502280112 Out of 762,355 citations from 15,731 articles in the Journal

https://www.pnas.org/doi/10.1073/pnas.1502280112 https://www.pnas.org/doi/10.1073/pnas.1502280112 Out of 762,355 citations from 15,731 articles in the Journal of Immunology (1998–2007), we identified 18,304 as negative (about 2.4% of the total).