Correction After publication of this work [1], we noted that we inadvertently failed to include the complete list of all coauthors. The full list of authors has now been added and the Authors' contributions and Competing interests section modified accordingly. Competing interests The authors declare they have no competing interests. Authors' contributions PP developed the model and designed the study. BAJ, LS, BV, DA, MC, FB, GI and AF checked the appropriateness of the study from oncology, radiotherapy and mathematical points of view. PP, RC, MC and LS compiled the manuscript and produced the graphical illustrations. AN, GS, MB, RO and VF supervised the manuscript from radiobiological and clinical point of view. All co-authors approved the manuscript. References 1. Pedicini P, Caivano R, Jereczek-Fossa BA, Strigari L, Vischioni B, Alterio D, Cremonesi M, Botta F, Nappi A, Improta G, Storto G, Benassi M, Orecchia R and Fusco V: Modelling the correlation between EGFr expression and tumour cell radiosensitivity, and combined treatments of radiation and monoclonal antibody EGFr inhibitors. Theor Biol Med Model 2012, 9:23.