参考文献:
NOVARTIS AG ALTMANN, Eva HOMMEL, Ulrich LORTHIOIS, Edwige Liliane Jeanne MAIBAUM, Juergen Klaus OSTERMANN, Nils QUANCARD, Jean RANDL, Stefan Andreas SIMIC, Oliver VULPETTI, Anna ROGEL, Olivier Patent: WO/93 A, Location in patent: Page/Page column 59 WO /93 A