Reliability and validity of the digestive health status instrument in samples of community, primary care, and gastroenterology patients.
Aliment Pharmacol Ther. 2001 Jul;15(7):981-7. doi: 10.1046/j.1365-2036.2001.01026.x.
Aliment Pharmacol Ther. 2001.
PMID: 11421873
Free article.