RT Journal Article SR Electronic T1 Sharing hypotheses and ideas in public health research: contributing to the research agenda JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 2 OP 4 DO 10.1136/jech.2006.049114 VO 61 IS 1 A1 Blanca Lumbreras A1 Ildefonso Hernández-Aguado YR 2007 UL http://jech.bmj.com/content/61/1/2.abstract AB