Does infection with Chlamydia pneumoniae and/or Helicobacter pylori increase the expression of endothelial cell adhesion molecules in humans? - Schumacher,A.; Seljeflot,I.; Lerkerod,A.B.; Sommervoll,L.; Otterstad,J.E.; Arnesen,H. (Clin Microbiol Infect, 2002)