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Hanson-Painton O, Randolph V, Saugstad JA, Oh SK, Tobin SL.Hanson-Painton O, et al.Int J Dev Biol. 1992 Sep;36(3):343-51.Int J Dev Biol. 1992.PMID: 1280154
van Duijnhoven HL, Helfrich W, de Leij L, Roebroek AJ, van de Ven WJ, Healey K, Culverwell A, Rossell RJ, Kemshead JT, Patel K.van Duijnhoven HL, et al.Int J Cancer. 1992 Jan 2;50(1):118-23. doi: 10.1002/ijc.2910500124.Int J Cancer. 1992.PMID: 1339414