{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T08:39:02Z","timestamp":1770971942497,"version":"3.50.1"},"reference-count":15,"publisher":"Wiley","issue":"1-6","license":[{"start":{"date-parts":[[2009,4,24]],"date-time":"2009-04-24T00:00:00Z","timestamp":1240531200000},"content-version":"vor","delay-in-days":14712,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Internal Medicine"],"published-print":{"date-parts":[[1969,1,12]]},"abstract":"<jats:p><jats:bold>Abstract<\/jats:bold> Jejunal lactase activities have been determined in 41 patients who had consulted general practitioners on account of \u201cunspecific abdominal complaints\u201d. Twelve of these patients had low jejunal lactase activity and they all had selective lactase deficiency.<\/jats:p><jats:p>A lactose\u2010free diet for two weeks had a beneficial effect on all the patients with low lactase activity, and the effect was not temporary, as could be noted on inquiry about six months later.<\/jats:p><jats:p>It is remarkable that only two of the twelve patients with low lactase activity had a history of milk intolerance.<\/jats:p><jats:p>Determination of small\u2010intestinal lactase activity or a peroral lactose tolerance test is recommended as a routine test for milk\u2010drinking patients with \u201cunspecific abdominal complaints\u201d.<\/jats:p>","DOI":"10.1111\/j.0954-6820.1969.tb01466.x","type":"journal-article","created":{"date-parts":[[2010,8,15]],"date-time":"2010-08-15T14:04:08Z","timestamp":1281881048000},"page":"217-222","source":"Crossref","is-referenced-by-count":27,"title":["LACTASE DEFICIENCY AND A LACTOSE\u2010FREE DIET IN PATIENTS WITH \u201cUNSPECIFIC ABDOMINAL COMPLAINTS\u201d"],"prefix":"10.1111","volume":"186","author":[{"given":"J.","family":"Jussila","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Launiala","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"O.","family":"Gorbatow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2009,4,24]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.197.12.968"},{"key":"e_1_2_1_3_2","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1016\/S0016-5085(68)80042-3","article-title":"Digestive disease as a national problem. 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Scand. J. Gastroent. In press."},{"key":"e_1_2_1_9_2","unstructured":"Jussila J.:Milk intolerance and lactose intolerance in hospital patients and young servicemen in Finland. To be published."},{"key":"e_1_2_1_10_2","first-page":"223","volume-title":"Modern dairy products","author":"Lampert L. 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