Nasal carriage of methicillin-resistant Staphylococcus aureus (MRSA) among undocumented migrants and uninsured legal residents in Amsterdam, the Netherlands: a cross-sectional stud... oleh E. van Dulm, S. Klok, A. Boyd, I. K. Joore, M. Prins, A. P. van Dam, G. A. Tramper-Stranders, Y. T. H. P. van Duijnhoven