Hägg, Urban Initial and late treatment effects of headgear-Herbst appliance with mandibular step-by-step advancement / Urban Hägg, Xi Du, A. Bakr M. Rabie

Initial and late treatment effects of headgear-Herbst appliance with mandibular step-by-step advancement / Urban Hägg, Xi Du, A. Bakr M. Rabie Medicina dentária
Ortodontia