GlaxoSmithKline plc; Pfizer Inc.; Sanofi S.A.; Merck & Co. Inc.; Indian Immunologicals Limited; AstraZeneca plc; CSL Limited; Mitsubishi Tanabe Pharma Corporation; Serum Institute of India Pvt. Ltd.; Panacea Biotec Ltd.; Zydus Cadila; BIO-MED; Squibb; Novartis; Abbott Laboratries; Eli Lillyand Company; F. Hoffmann- La Roche Ltd.; Novo Nordisk A/S; VF Corporation; Sinovac Biotech Ltd.; Bristol- Myers; Sun Pharmaceutical Industries Ltd; Sellas and Takeda Pharmaceutical Company Limited; Daiichi Sankyo; Bristol- Myers; Sinovac Biotec Ltd.