AM van der Velden, AM Claessen, H van Velzen-Blad, DH Biesma, and GT Rijker. 2005. “Development of Functional Haemophilus Influenzae Type B Antibodies After Vaccination”. Haematologica 90 (11). Pavia, Italy, 1582-84. https://haematologica.org/article/view/3726.