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Brockdorff N, Ashworth A, Kay GF, Cooper P, Smith S, McCabe VM, Norris DP, Penny GD, Patel D, Rastan S.Brockdorff N, et al. Among authors: penny gd.Nature. 1991 May 23;351(6324):329-31. doi: 10.1038/351329a0.Nature. 1991.PMID: 2034279
Kay GF, Ashworth A, Penny GD, Dunlop M, Swift S, Brockdorff N, Rastan S.Kay GF, et al. Among authors: penny gd.Nature. 1991 Dec 12;354(6353):486-9. doi: 10.1038/354486a0.Nature. 1991.PMID: 1749428
Kay GF, Penny GD, Patel D, Ashworth A, Brockdorff N, Rastan S.Kay GF, et al. Among authors: penny gd.Cell. 1993 Jan 29;72(2):171-82. doi: 10.1016/0092-8674(93)90658-d.Cell. 1993.PMID: 8425217
Penny GD, Kay GF, Sheardown SA, Rastan S, Brockdorff N.Penny GD, et al.Nature. 1996 Jan 11;379(6561):131-7. doi: 10.1038/379131a0.Nature. 1996.PMID: 8538762