1. Dupuytren PB: In Millard DR Jr (ed), Cleft craft: The evolution of its surgery. II. Bilateral and rare deformities. Boston: Little Brown, 1977, p 98
2. Gabarro P: Some technical points about the repair of double cleft lips. Acta Chir Plast9:121–130, 1967
3. Kitajima T: The effect of cleft lip repair on the pressure of the lip. Jpn Cleft Palate Assoc2:1–12, 1977
4. Lindemann (1941) refer to ref. 1 —
5. Lorenz (1907) refer to ref. 1 —