The role of human innate immune factors in nasal colonization by Staphylococcus aureus. by van Belkum, A, Emonts, M, Wertheim, H, de Jongh, C, Nouwen, J, Bartels, H, Cole, A, Cole, A, Hermans, P, Boelens, H, Toom, N, Snijders, S, Verbrugh, H, van Leeuwen, W