Use of CAD CAM for guided biopsy in a patient with bilateral retinoblastoma and craniofacial osteosarcomas. (May 2019) - Araya-Salas, C.; Brenner, C.; Cordova, P.; Caro, I.; Bustos, F.; Valdes, F.; Pizarro, L.; Veloso, M.; Montes, R.