title: An innovative approach to digitally flip the classroom by using an online "graffiti wall" with a blog.
authors.affiliation: a Department of Diagnostic Radiology , National University of Singapore , Singapore ;
authors.forename: Poh Sun
authors.initials: PS
authors.lastname: Goh
authors.affiliation: b Academic Unit of Medical Education , University of Sheffield , UK.
authors.forename: John
authors.initials: J
authors.lastname: Sandars
mesh_terms: D057218:Blogging; D004501:Education, Medical