A four year prospective study on microbial ecology of explanted prosthetic hips in 52 patients with “aseptic” prosthetic joint loosening. - Perdreau-Remington,F.; Stefanik,D.; Peters,G.; Ludwig,C.; Rutt,J.; Wenzel,R.; Pulverer,G. (Eur J Clin Microbiol Infect Dis, 1996)