Fennrich, Stefan, et al. “[A New Application for the Human Whole Blood Test: Development of an Assay to Assess the Health Risk of Air-Borne Microbial Contaminations] [Article in German]: LINZ 2000”. ALTEX - Alternatives to Animal Experimentation, vol. 18, no. 1, Feb. 2001, pp. 41-46, https://altex.org/index.php/altex/article/view/1373.