title: Supplemental digital content.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Ryan
mesh_terms: D040421:Cell Phone / Q000639:trends*; D034201:Computers, Handheld / Q000639:trends*; D006801:Humans; D020407:Internet; D009040:Motion Pictures; D009907:Optometry; D010506:Periodicals as Topic