2006d-666 2012c-653 child chronicpain diagnosis drugtherapy endoscopy etc fluoroscopic fluoroscopie gastrointestinal gastrointestinalsystem guides handbooks infant injections injectionsintrarachidiennes manuals manuels methods pain pediatricradiography ponctionlombaire puncture radiography spinal spinalpuncture spine treatment urography wb39w246h2006 wi141 wn240d221r