AOSpine Principles Level Specimen Course—Principles and practice of spinal surgery: A circumferential approach 28 January, 201826 January, 2018 by Administrador AOSpine Principles Level Specimen Course—Principles and practice of spinal surgery: A circumferential approach January 26, 2018 — January 27, 2018 Belfast, UK Share this:WhatsAppTwitterFacebookGoogleEmailPrintMoreTelegram Related