 6. Forsum U, Holst E, Larsson PG, Vasquez A, Jakobsson T, Mattsby-Baltzer I. Bacterial vaginosis--a microbiological and immunological enigma. APMIS : acta pathologica, microbiologica, et immunologica Scandinavica. 2005 Feb;1132:81-90. PubMed PMID: 15723682. 