1. Oregon State University; Corvallis; OR; USA
2. Geomicrobiology Group; Kochi Institute for Core Sample Research; Japan Agency for Marine-Earth Science and Technology (JAMSTEC); Nankoku; Kochi; Japan
3. Institut de Ciencia i Tecnologia Ambientals (ICTA); Edifici de Ciencies; Universitat Autonòma de Barcelona; Cerdanyola del Valles; Barcelona; Spain
4. United States Geological Survey; Menlo Park; CA; USA