FactorVIII gene inversions causing severe haemophilia A originate almost exclusively in male germ cells - Rossiter, J P; Young, M; Kimbeiiand, M L; Hutter, P; Ketterlug, R P; Gitschier, J; Horst, J; Morris, M A; Schaid, D J; de Moreloose, P; Sommer, S S; Kazazian, H H; Antonarakis, S E (Hum Mol Genet, 1994)