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Rütter JE, De Graaf PW, Kooyman CD, Van Leeuwen MS, Obertop H.Rütter JE, et al. Among authors: obertop h.Eur J Surg. 1994 Feb;160(2):119-20.Eur J Surg. 1994.PMID: 8193208No abstract available.
van Sterkenburg SM, van Leeuwen MS, Hennipman A, Obertop H.van Sterkenburg SM, et al. Among authors: obertop h.Ned Tijdschr Geneeskd. 1994 Jan 15;138(3):113-5.Ned Tijdschr Geneeskd. 1994.PMID: 8295634Dutch.No abstract available.
van den Hoed RD, Feldberg MA, van Leeuwen MS, van Dalen T, Obertop H, Kooyman CD, van der Schouw YT, de Graaf PW.van den Hoed RD, et al. Among authors: obertop h.Abdom Imaging. 1997 Mar-Apr;22(2):132-7. doi: 10.1007/s002619900157.Abdom Imaging. 1997.PMID: 9013520
van Erpecum KJ, Stolk MF, van Berge Henegouwen GP, van Leeuwen M, Vos A, Obertop H.van Erpecum KJ, et al. Among authors: obertop h.Ned Tijdschr Geneeskd. 1991 Aug 31;135(35):1569-73.Ned Tijdschr Geneeskd. 1991.PMID: 1922486Dutch.No abstract available.
Merchant TE, Obertop H, de Graaf PW.Merchant TE, et al. Among authors: obertop h.Breast Cancer Res Treat. 1993;25(3):257-64. doi: 10.1007/BF00689840.Breast Cancer Res Treat. 1993.PMID: 8396465