1. Medical Physicochemical Centre; Donetsk Medical University; 16 Ilych Avenue 83003 Donetsk Ukraine
2. Institute of Biocolloid Chemistry; 42 Vernadsky Avenue 03680 Kiev Ukraine
3. Nestec Ltd.; Nestlé Research Centre; Vers-chez-les-Blanc 1000 Lausanne 26 Switzerland
4. Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam/Golm Germany