RT Journal Article SR Electronic T1 Drinking water and gastrointestinal disease: need of better understanding and an improvement in public health surveillance JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 3 OP 5 DO 10.1136/jech.54.1.3 VO 54 IS 1 A1 BALLESTER, FERRAN A1 SUNYER, JORDI YR 2000 UL http://jech.bmj.com/content/54/1/3.abstract AB