A new problem-solving indwelling voice prosthesis, eliminating the need for frequent Candida-and „underpressure”-related replacements: Provox ActiValve. - Hilgers,F.J.; Ackerstaff,A.H.; Balm,A.J.; Van den Brekel,M.W.; Bing Tan,I.; Persson,J.O. (Acta Otolaryngol, 2003)