1. Baldwin VJ, Kalousek DK, Dimmick JE, Applegarth DA, Hardwick DF (1988) Diagnostic pathologic investigation of the malformed conceptus. Pediatr Pathol 9:65–108
2. Bergström S (1971) Surface ultrastructure of human amnion and chorion in early pregnancy. Obstet Gynecol 38:513–524
3. Bernert J, Rauskolb R, Jovanovic V, Eiben B, Hansmann I, Schleiermacher E, Köhler A (1988) Zytogenetische Untersuchungen von Chorionzottengewebe aus Abortmaterial. Gynäkologe 21:107–109
4. Boué A, Gropp A, Boué J (1985) Cytogenetics of pregnancy wastage. In: Harris H, Hirschhorn K (eds) Advances in human genetics. Plenum, New York, pp 1–50
5. Boué J, Philippe E, Giroud A, Boué A (1976) Phenotypic expression of lethal chromosomal anomalies in human abortuses. Teratology 14:3–13