| Affiliation: | (1) Laboratory of Microbiology, Faculty of Sciences, State University, Gent, Belgium;(2) Koninklijke/Shell-Laboratorium, Amsterdam;(3) Shell Internationale Research Maatschappij N.V., the Hague;(4) Laboratory of Microbiology, Amsterdam, The Netherlands;(5) Municipal Health Laboratory, Amsterdam;(6) National Institute of Public Health, Utrecht, The Netherlands;(7) Laboratory of Microbiology, Agricultural University, Wageningen, The Netherlands;(8) Institute for Organic Chemistry T.N.O., Utrecht, The Netherlands;(9) Central Institute for Nutrition and Food Research T.N.O., Utrecht, The Netherlands;(10) National Institute of Public Health, Bilthoven, The Netherlands |
