A Real World Evaluation of the safety and immunogenicity of the Covishield vaccine, ChAdOx1 nCoV- 19 Corona Virus Vaccine (Recombinant) in Health Care Workers (HCW) in National Capital Region (NCR) of India: A preliminary reportSushila Kataria, Naresh Trehan, Rashmi Phogat et al.|medRxiv|2021Cited by 15