| Category | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Medicine (miscellaneous) | Q2 | Q2 | Q3 | Q3 | Q3 | Q3 | Q3 |
| Immunology and microbiology (miscellaneous) | Q4 | Q4 | Q4 | Q4 | Q4 | Q4 | Q4 |
| 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | |
| Medicine (miscellaneous) | Q3 | Q3 | Q3 | Q3 | Q3 | Q3 | Q3 |
| Immunology and microbiology (miscellaneous) | Q4 | Q3 | Q4 | Q4 | Q4 | Q3 | Q4 |