Garcia-Martin, E. Gil-Arribas, L. M. Idoipe, M. Alfaro, J. Pueyo, V. Pablo, L. E. Fernandez, F. J. Comparison of imiquimod 5% cream versus radiotherapy as treatment for eyelid basal cell carcinoma Br. j. ophthalmol. 10.1136/bjo.2010.193078 2011 2011