| | | | |
| web | Estelle Viljoen, Janicke Visse... | Nutr J | 2014-03-19 |
| web | Pillai AK, Sharma KK | Pediatr Blood Cancer | 2010-09-14 |
| web | Chaiyakunapruk N, Kitikannakor... | Am J Obstet Gynecol | 2006-01-01 |
| web | Ernst E, Pittler MH | Br J Anaesth | 2000-03-01 |
| web | Hilary Parker | WebMD | 2023-02-12 |
| web | Kristeen Cherney | Healthline | 2019-03-07 |
| web | Lihi Bar-Lev Schleider, Raphae... | European Journal of Internal M... | 2018-03-01 |
| web | Erin Brodwin | Business Insider | 2018-02-15 |
| web | Smith LA, Azariah F | Cochrane Database Syst Rev | 2015-11-12 |
| web | Suzanne Goldenberg | The Guardian | 2014-01-10 |
| web | | Reuters | 2003-09-30 |