| web | Liz Szabo | USA TODAY | 2015-02-25 | |
| web | ScienceDaily | 2015-06-17 | ||
| web | Theodore Rokkas, Javier P Gisb... | United European Gastroenterol ... | 2019-05-27 | |
| web | Liz Szabo | USA TODAY | 2015-02-25 | |
| web | ScienceDaily | 2015-02-04 | ||
| web | Amanda Gardner | HealthDay | 2011-11-01 | |
| web | ScienceDaily | 2015-07-23 | ||
| web | Liz Szabo | USA TODAY | 2015-02-25 | |
| web | Margaret Munro | Edmonton Journal | 2013-11-14 | |
| web | Eric N Hammond & Eric S Donkor | BMC Research Notes | 2013-05-07 |