Contrast-enhanced harmonic endoscopic ultrasound in solid lesions of the pancreas: results of a pilot study - Napoleon, B.; Alvarez-Sanchez, M. V.; Gincoul, R.; Pujol, B.; Lefort, C.; Lepilliez, V.; Labadie, M.; Souquet, J. C.; Queneau, P. E.; Scoazec, J. Y.; Chayvialle, J. A.; Ponchon, T. (Endoscopy, 2010)