Merkel cell polyomavirus DNA in respiratory specimens from children and adults. - Bialasiewicz S; Lambert SB; Whiley DM; Nissen MD; Sloots TP; Bialasiewicz, Seweryn; Lambert, Stephen B; Whiley, David M; Nissen, Michael D; Sloots, Theo P (Emerging Infectious Diseases, 2009)