A Nitsche, M Becker, I Junghahn, J Aumann, O Landt, I Fichtner, B Wittig and W Siegert (2001) “Quantification of human cells in NOD/SCID mice by duplex real-time polymerase-chain reaction”, Haematologica. Pavia, Italy, 86(7), pp. 693-699. doi: 10.3324/%x.