| web | Barbara Bolen, PhD | Verywell Health | 2021-05-25 |
| web | Mani Rajagopalan, Ashray Rajag... | Current Medical Issues | 2021-04-15 |
| web | | drugs.com | 2021-04-28 |
| web | Dr Juliette Loehry, Consultant... | Dorset County Hospital | 2020-04-01 |
| web | Radkin Honzak | Biomedical | 2019-08-06 |
| web | Wei-Dong Li, Lin Jia, Shu-Man ... | Int J Clin Exp Med | 2019-01-30 |
| web | | Mayo Clinic | 2015-09-05 |
| web | Anthony J Viera, Steve Hoag | Am Fam Physician | 2002-11-15 |
| web | M Rajagopalan, G Kurian | J Gastroenterol Hepatol | 1998-07-01 |
| web | Steinhart MJ, Wong PY | Int J Psychiatry Med | 1981-01-01 |