Held Kathryn D, Lomax Antony J, Troost Esther G C
Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA.
Center for Proton Therapy, Paul Scherrer Institute, Villigen, Switzerland.
Br J Radiol. 2020 Mar;93(1107):20209004. doi: 10.1259/bjr.20209004.