501 Azidan Hojin Biseibutsu Kagaku Kenkyu Kai
501 Greenwich Pharmaceuticals Incorporated
501 Laboratorios Del, Dr. Esteve
501 Noristan Limited
501 Sigma Tau Industrie Farmaceutiche Riunite S.p.A.
501 Societe Civile de Recherches et d'Etudes Theraputiques