title: The AJR homepage: robots.txt and negative effect on search engines.
authors.affiliation: 1 Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Michael Yong
authors.initials: MY
authors.lastname: Park
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Byun
mesh_terms: D033181:Information Dissemination; D010506:Periodicals as Topic; D011871:Radiology; D057386:Search Engine; D061108:Social Media