Cold War tensions and the polio vaccine was the first polio vaccine to receive approval of the U.S. government, and was used until 1961 in America, when the Sabin vaccine was recommended to replace it. Albert Sabin, a virologist who publicly disagreed with Salk and his killed vaccine, worked on creating a vaccine with live, attenuated vaccines. Despite Cold War tensions, in January, 1956 Mikhail Chumakov, the director of Moscow's Polio Research Institute, his wife and colleague Marina Voroshilova, and Anatoli Smorodentsev, traveled to the U.S. in order to study the Salk vaccine and visited the laboratory of Albert Sabin. With the clearance of the FBI, Sabin
His Name Is Legs (Ladies and Gentlemen) before undertaking a much-anticipated North American tour with Ravi Shankar. With Peter Sellers among his entourage, Harrison alternatively adopted comedy and his Hindu-aligned spiritual goals as a defence against expectations related to his Beatle past during the tour.<ref name="Fong-Torres/2001">Ben Fong-Torres, "George Harrison: Harrison in the Haight", "San Francisco Chronicle", 2 December 2001; available at Rock's Backpages (subscription required).</ref> When discussing "His Name Is Legs" with BBC Radio 1 DJ Paul Gambaccini in September 1975, Harrison said that after recording the basic track, he invited Smith to sing the first two lines of each of the bridges. Smith did these vocal