Lymphatic malformations of the head and neck: a retrospective review and a support for staging - Hamoir, M; Plouin-Gaudon, I; Rombaux, P; Francois, G; Cornu, A S; Desuter, G; Clapuyt, P; Debauche, C; Verellen, G; Beguin, C (Head Neck, 2001)