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van der Kolk BM, Mulder NH, Mantingh A, van den Berg E, Schraffordt Koops H, de Vries EG, Willemse PH, Sleijfer DT.van der Kolk BM, et al. Among authors: schraffordt koops h.Eur J Obstet Gynecol Reprod Biol. 1990 Jan-Feb;34(1-2):167-70. doi: 10.1016/0028-2243(90)90020-2.Eur J Obstet Gynecol Reprod Biol. 1990.PMID: 1689259
Mulder NH, Sleijfer DT, de Vries EG, Schraffordt Koops H, Willemse PH.Mulder NH, et al. Among authors: schraffordt koops h.J Cancer Res Clin Oncol. 1990;116(3):301-2. doi: 10.1007/BF01612907.J Cancer Res Clin Oncol. 1990.PMID: 2196265
Mulder NH, Sleijfer DT, de Vries EG, Schraffordt Koops H, Samson MJ, Willemse PH.Mulder NH, et al. Among authors: schraffordt koops h.J Cancer Res Clin Oncol. 1989;115(1):93-5. doi: 10.1007/BF00391607.J Cancer Res Clin Oncol. 1989.PMID: 2466036
Sleijfer DT, Offerman JJ, Mulder NH, Verweij M, van der Hem GK, Schraffordt Koops HS, Meijer S.Sleijfer DT, et al. Among authors: schraffordt koops hs.Cancer. 1987 Dec 1;60(11):2823-8. doi: 10.1002/1097-0142(19871201)60:11<2823::aid-cncr2820601138>3.0.co;2-c.Cancer. 1987.PMID: 3677015