Health

Denny Hamlin (11) celebrates after winning a NASCAR Daytona 500 auto race at Daytona International Speedway, Sunday, Feb. 17, 2019, in Daytona Beach, Fla. (AP Photo/Phelan M. Ebenhack)

This undated photo issued by the Metropolitan Police shows Shamima Begum. A pregnant British teenager who ran away from Britain to join Islamic State extremists in Syria four years ago has said she wants to come back to London, but her path home is not clear. Shamima Begum told The Times newspaper in a story published Thursday Feb. 14, 2019, that she wants to come back to London. (Metropolitan Police via AP)

Chicago Cubs shortstop Addison Russell speaks at a press conference after a spring training baseball workout Friday, Feb. 15, 2019, in Mesa, Ariz. (AP Photo/Morry Gash)

FILE - This file photo from June of 1971 shows the exterior of a fallout shelter built for 200 people on Amchitka Island, Alaska, the site of nuclear bomb testing in the 1960s and 1970s. The U.S. government conducted three underground nuclear tests on the island, located in Alaska's Aluetian chain, in the 1960s and 1970s, and the Energy department is responsible for long-term stewardship and monitoring of the sites. (AP Photo, file)

FILE - In this Aug. 24, 2018, file photo, Japan's Rikako Ikee holds up her gold medal after winning the women's 50m freestyle final during the swimming competition at the 18th Asian Games in Jakarta, Indonesia. Ikee, the favorite for the 100-meter butterfly for the 2020 Tokyo Olympics, has been diagnosed with leukemia. Ikee said on her verified Twitter account Tuesday, Feb. 12, 2019, her illness surfaced when she got tests after returning from Australia not feeling well. (AP Photo/Lee Jin-man, File)

FILE - In this Tuesday, March 13, 2018 file photo, police officers stand guard at the bottom of the road where poisoned former Russian double agent Sergei Skripal lives in Salisbury, England. Bulgaria will investigate reports about a third suspect in last year's nerve agent poisoning of a Russian ex-spy in England, a suspect who has also been allegedly involved in a 2015 poisoning in Bulgaria. Tsvetan Tsvetanov of the ruling party says Bulgaria's intelligence services will present evidence at a parliamentary hearing Thursday, Feb. 14, 2019. (AP Photo/Matt Dunham, file)

Nigeria's Israel Adesanya, left, reacts after defeating Brazil's Anderson Silva during their middleweight bout at the UFC 234 event in Melbourne, Australia, Sunday, Feb. 10, 2019. (AP Photo/Andy Brownbill)

U.S. Sen. Cory Booker, D-N.J., poses for a photo with Alyssa Benson, of Mason City, Iowa, right, and her daughter Jersey, center, during a meet and greet with local residents at the First Congregational United Church of Christ, Friday, Feb. 8, 2019, in Mason City, Iowa. (AP Photo/Charlie Neibergall)

In this Feb. 7, 2019, photo, Senate Judiciary Committee member Sen. Cory Booker, D-N.J., arrives as the panel meets to vote on the nomination of William Barr to be attorney general, on Capitol Hill in Washington. Booker is taking his call for social justice to Iowa, where he plans to visit with black leaders this weekend on his first trip to the early 2020 caucus state as a Democratic presidential candidate. (AP Photo/J. Scott Applewhite)

Woman shouts "Welcome humanitarian aid" as he waives Venezuelan flag in front aof a group of Venezuelan Army soldiers and National Guard officers blocking the main access to the Tienditas International Bridge that links Colombia and Venezuela, near Urena, Venezuela, Thursday, Feb. 7, 2019. Venezuela's opposition leaders requested the shipments and vowed to bring them inside the troubled nation despite objections from embattled President Nicolas Maduro. (AP Photo/Fernando Llano)