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Goubau P, Van Gerven V, Safary A, Delem A, Knops J, D'Hondt E, André FE, Desmyter J.Goubau P, et al. Among authors: knops j.Vaccine. 1992;10 Suppl 1:S114-8. doi: 10.1016/0264-410x(92)90561-w.Vaccine. 1992.PMID: 1335638Clinical Trial.
Steeno O, Knops J, Declerck L, Adimoelja A, van de Voorde H.Steeno O, et al. Among authors: knops j.Andrologia. 1976;8(1):47-53. doi: 10.1111/j.1439-0272.1976.tb01645.x.Andrologia. 1976.PMID: 986121No abstract available.
van de Voorde H, Knops J.van de Voorde H, et al. Among authors: knops j.Arch Belg Med Soc. 1966 Jul;24(7):486-94.Arch Belg Med Soc. 1966.PMID: 5957132Dutch.No abstract available.
Knops J, Van de Voorde H, Borghgraef C.Knops J, et al.Arch Belg Med Soc. 1966 May;24(5):330-8.Arch Belg Med Soc. 1966.PMID: 5920114Dutch.No abstract available.