Halsema, J. M. (1998). Dialectiek van de seksuele differentie. De filosofie van Luce Irigaray. [Thesis, fully internal, Universiteit van Amsterdam]. Boom.
van der Schoot, A. (1998). De ontstelling van Pythagoras. Over de geschiedenis van de goddelijke proportie. [Thesis, fully internal, Universiteit van Amsterdam]. Kok Agora.
Blok, P. (1998). Molecular aspects of gastric carcinogenesis. [Thesis, externally prepared, Universiteit van Amsterdam].
ten Boekel, E. (1998). B lymphocyte development in bone marrow: immunogenetic studies. [Thesis, externally prepared, Universiteit van Amsterdam].
Bollen, L. J. M. (1998). Genital human papillomavirus. Detection and clinical relevance. [Thesis, fully internal, Universiteit van Amsterdam].
Booij, J. (1998). Imaging of dopamine transporters in Parkinson's disease with single photon emission computed tomography. [Thesis, fully internal, Universiteit van Amsterdam].
ter Borg, F. (1998). HBeAg-negative hepatitus B. [Thesis, externally prepared, Universiteit van Amsterdam]. Thela-Thesis.
van den Broek, N. R. (1998). Anaemia in pregnancy: studies on screening, prevalence and aetiology from South Malawi. [Thesis, externally prepared, Universiteit van Amsterdam].
van den Belt, A. G. M. (1998). Clinical decisions in patients with venous thromboembolism. [Thesis, fully internal, Universiteit van Amsterdam].
de Bruijn, S. F. T. M. (1998). Cerebral venous sinus thrombosis. Clinical and epidemiological studies. [Thesis, externally prepared, Universiteit van Amsterdam].