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Keldsen N, Philip P, Pedersen-Bjergaard J.Keldsen N, et al. Among authors: philip p.Cancer Genet Cytogenet. 1987 Nov;29(1):43-55. doi: 10.1016/0165-4608(87)90029-x.Cancer Genet Cytogenet. 1987.PMID: 3311351Review.