Stellan Hertegård, Lars Hallén, Claude Laurent, Elisabeth Lindström, Katarina Olofsson, Per Testad, Åke Dahlqvist,
Cross-linked hyaluronan versus collagen for injection treatment of glottal insufficiency: 2-year follow-up. Acta Oto-laryngologica. ,vol. 124, pp. 1208- 1214 ,(2004) ,
10.1080/00016480410017701