http://www.has-sante.fr/portail/jcms/c_1671509/fr/optison http://www.has-sante.fr/portail/jcms/c_1671508/fr/optison-16102013-avis-ct12724 2013 France French evaluation of the transparency committee perflutren contrast media FS 069 perfluoropropane-filled albumin microsphere solution echocardiography cardiovascular diseases perflutren, human albumin microspheres fluorocarbons albumins