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Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said Wednesday he supports a national mask mandate as the weather continues to grow colder.

Any deal struck between the two companies would face intense regulatory scrutiny.

Apart from solving the technology challenges, there are a number of other concerns that are yet to be solved such as managing risks and improving efficiency, according to Di.

Apart from the guidebook, the association also will set up representative offices in some Belt and Road countries, according to Jiang.

Annual rankings by the Genetic Engineering & Biotechnology News, a US-based industry journal, showed Amgen was ranked first among biopharmaceutical companies in the world for 2019 for the second time. It is one of the world's largest independent biotechnology companies, with its headquarters located in Thousand Oaks, California.