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Wheeless LL, Reeder JE, Han R, O'Connell MJ, Frank IN, Cockett AT, Hopman AH.Wheeless LL, et al.Cytometry. 1994 Dec 1;17(4):319-26. doi: 10.1002/cyto.990170407.Cytometry. 1994.PMID: 7875039Free article.
Collard JG, van de Poll M, Scheffer A, Roos E, Hopman AH, Geurts van Kessel AH, van Dongen JJ.Collard JG, et al.Cancer Res. 1987 Dec 15;47(24 Pt 1):6666-70.Cancer Res. 1987.PMID: 3499980