Pedro Janssen
pedro at plex.nl
Wed Dec 23 07:19:10 CST 2009
Hello Group, i need to filter out Patients [PatID] with the diagnosis [Diag] = "*Coeliakie*" and Immunology [Immuno] = "IgA" and have undergone a new examination, within a month [Date], where the sample [Materiaal] = "Duodenum" Normally i do these with several query's etc. Can i do this in one? Thanks Pedro