Comorbidity in irritable bowel syndrome.
Whitehead WE, Palsson OS, Levy RR, Feld AD, Turner M, Von Korff M.
Whitehead WE, et al. Among authors: levy rr.
Am J Gastroenterol. 2007 Dec;102(12):2767-76. doi: 10.1111/j.1572-0241.2007.01540.x. Epub 2007 Sep 26.
Am J Gastroenterol. 2007.
PMID: 17900326