Penn Libraries and the Hospital of the University of Pennsylvania (HUP) Patient and Family Education Committee are observing Health Literacy Month by participating in the National Library of Medicine's #citeNLM Wikipedia Edit-a-thon initiative to edit health-related pages on Wikipedia, an online open-source encyclopedia that has become one of the world's most popular websites. Learn how to edit Wikipedia pages using information found on MedlinePlus, PubMed, and other credible health websites. No prior experience with Wikipedia is necessary for this volunteer activity.