Operator
Good day, everyone, and welcome to Pfizer's first-quarter 2021 earnings conference call. Today's call is being recorded. At this time, I would like to turn the call over to Mr. Chuck Triano, senior vice president of investor relations.
Please go ahead, sir.
Senior Vice President of Investor Relations
Thank you, operator. Good morning, and thanks for joining us today to review Pfizer's first-quarter 2020 results and financial guidance update, as well as other relevant business topics. I'm joined today as usual by our chairman and CEO, Dr. Albert Bourla; Frank D'Amelio, our CFO; Mikael Dolsten, president of worldwide research and development and medical; Angela Hwang, group president, Pfizer Biopharmaceuticals Group; John Young, our chief business officer; and Doug Lankler, general counsel.