title: RETRACTED: Robust Proton Pencil Beam Scanning Treatment Planning for Rectal Cancer Radiation Therapy.
abstract: This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
  This article has been retracted for failure to comply with the University of Pennsylvania's standards for publishing team-based research following a formal investigation by that institution.
authors.affiliation: Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: jkiely@sas.upenn.edu.
authors.forename: Janid Patricia
authors.initials: JP
authors.lastname: Blanco Kiely
authors.affiliation: Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Benjamin M
authors.initials: BM
authors.lastname: White
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019583:Dose Fractionation, Radiation; D005260:Female; D005270:Femur Head / Q000528:radiation effects; D006801:Humans; D007422:Intestines / Q000502:physiology / Q000528:radiation effects; D008297:Male; D008875:Middle Aged; D058958:Organs at Risk / Q000528:radiation effects*; D061766:Proton Therapy / Q000379:methods*; D011832:Radiation Injuries / Q000517:prevention & control*; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D061106:Radiotherapy Setup Errors; D050397:Radiotherapy, Intensity-Modulated / Q000379:methods*; D012004:Rectal Neoplasms / Q000532:radiotherapy*; D012062:Relative Biological Effectiveness; D018709:Statistics, Nonparametric; D001743:Urinary Bladder / Q000528:radiation effects