TY - JOUR AU - Stather, D R; Maceachern, P; Rimmer, K TI - Validation of an endobronchial ultrasound simulator: differentiating operator skill level JO - Respiration VL - 81 PY - 2011 DO - 10.1159/000323520 SP - 325 EP - 332 N1 - et al. ER -