1. Where have all the conceptions gone?;Roberts;Lancet,1975
2. Stillbirths and first week deaths;Claireaux,1975
3. Spontaneous abortion risks in man;Warburton;Am J Hum Genet,1964
4. Chromosome aberrations in human spontaneous abortions;Boue;Mammalian Chromosome Newsletter,1968
5. Chromosomes and human fetal development;Wright,1976