Early treatment of cleft lip and palate : proceedings of the Third International Symposium, September 27 to 29, 1984, University of Zürich, Switzerland - Hotz, Margrit; Gnoinski, Wanda; Perko, Milivoj; Nussbaumer, Heidi; Hof, Erika; Haubensak, Rolf (Hans Huber Publishers, 1986)