Meier, R <br/><br/>
[Validation of the "Digest Questionnaire" for consistency and reproducibility with reference to upper abdominal symptoms].  [electronic resource] 

 -  Schweizerische medizinische Wochenschrift  May 1998 
 - 880-6 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0036-7672 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Activities of Daily Living--classification<br/>Adult<br/>Aged<br/>Cross-Sectional Studies<br/>Diagnosis, Differential<br/>Female<br/>Gastrointestinal Diseases--diagnosis<br/>Humans<br/>Incidence<br/>Male<br/>Middle Aged<br/>Observer Variation<br/>Quality of Life<br/>Reproducibility of Results<br/>Somatoform Disorders--diagnosis<br/>Surveys and Questionnaires<br/>Switzerland--epidemiology