Perfluorinated chemicals infiltrate ocean waters : Link between exposure levels and stable isotope ratios in marine mammals - Blust, Ronny.; Bouquegneau, Jean-Marie.; Coen, Wim De.; Das, Krishna.; Dongen, Walter Van.; Esmans, Eddy Louis.; Hoff, Philippe Tony.; Jauniaux, Thierry.; Vijver, Kristin Inneke Van de.