Vaccinia Scars Associated with Improved Survival among Adults in Rural Guinea-Bissau Jensen, Mette Lundsby ; Dave, Sangeeta ; van der Loeff, Maarten Schim ; da Costa, Carlos ; Vincent, Tim ; Leligdowicz, Aleksandra ; Benn, Christine Stabell ; Roth, Adam ; Ravn, Henrik ; Lisse, Ida Maria ; Whittle, Hilton ; Aaby, Peter Abstract Publication: PLoS ONE Pub Date: December 2006 DOI: 10.1371/journal.pone.0000101 Bibcode: 2006PLoSO...1..101J