1. A method for displaying a plurality of data descriptors arranged on an interactive timeline comprising a plurality of interactive timeline elements associated with time points, comprising: displaying one of the time points as one of the interactive timeline elements; selecting one of the data descriptors associated with the displayed time point; displaying the selected data descriptor in a template as one of interactive data elements; selecting a further one of the data descriptors associated with the displayed time point; displaying the further selected data descriptor, wherein the data descriptors describe items of data having time stamps and the items of data is retrieved based on the interactive data elements, wherein the steps of selecting comprises: grouping the items of data based on the time stamps and a pre-defined rule prescribing a grouping relation between the data descriptors, and aggregating the data descriptors describing same items of the grouped items of data as the further selected data descriptor, wherein one of the same items of the grouped items of data is retrieved based on a further one of the interactive timeline elements and displayed as a further time point, wherein the further displayed time point is suppressed if there are no same items of the grouped items of data, wherein the same items of the grouped items of data are compared by a double viewer having two panes for showing the same items of the grouped items of data simultaneously, wherein the further selected data descriptor is displayed in a further template, and wherein the template and the further template are merged into a common display template for directing a medical practitioner to the common display template only.