“…In all trials performed up to now, Google was used as search engine. Additionally, Bing [103,109,113,114,118,[124][125][126][127], Yahoo [103-105, 109, 113, 114, 118, 124-130], HONsearch [104], Med-linePlus [105], MSN, AOL, and Ask Jeeves [130] as well as omnimedicalsearch.com, pogofrog.com, searchmedica.co.uk, and imedisearch.com [125] were applied. The readability of the retrieved material according to the Flesch Reading Ease Score amounted to 29.7-61.5 [103, 104, 106-109, 112, 114, 115, 118, 122, 126, 130-139].…”