Diagnosis and treatment

Alabama head coach Nick Saban chews out a player during the first half of Alabama's A-Day NCAA college football scrimmage, Saturday, April 13, 2019, in Tuscaloosa, Ala. (AP Photo/Vasha Hunt)

FILE - In this Nov. 17, 2015, file photo, Detroit Lions quarterback Matthew Stafford, right, smiles while watching the Detroit Pistons play the Cleveland Cavaliers with his wife Kelly, left, during the first half of an NBA basketball game, in Auburn Hills, Mich. Kelly Stafford says she is home after surgery to remove a brain tumor. She says the surgery lasted 12 hours and shared other details Sunday, April 21, 2019, on her Instagram account. (AP Photo/Duane Burleson, File)

An Ebola health worker is seen at a treatment centre in Beni, Eastern Congo, Tuesday April,16, 2019. Congo's president on Tuesday said he wants to see a deadly Ebola virus outbreak contained in less than three months even as some health experts say it could take twice as long. (AP Photo/Al-hadji Kudra Maliro)

FILE - This Friday, Oct. 10, 2008, file photo illustration shows Johnson & Johnson products, in Philadelphia. Johnson & Johnson is topping profit and revenue expectations for the first quarter partially on strong sales of its psoriasis treatment, Stelara. The New Brunswick, N.J., company on Tuesday, April 16, 2019 posted profit of $3.75 billion, or $1.39 per share. Earnings, adjusted for amortization costs and research and development costs, were $2.10 per share, or 7 cents better that Wall Street expected, according to a survey by Zacks Investment Research. (AP Photo/Matt Rourke, File)

In this April 11, 2019 photo, Shelley Gillen is photographed in her Bellevue, Neb., home with her 17-year-old son, Will, who wears a helmet to protect him from damage during debilitating seizures. Gillen advocates the legalization of medical marijuana that could help her son's seizures. Nebraska's conservative lawmakers are poised to once again reject measures calling for allowing limited and highly regulated use of medical marijuana, but their decision this year could have the unintended consequence of ushering in one of the most unrestricted medical marijuana laws in the country. (AP Photo/Nati Harnik)

FILE - In this Monday, Sept. 24, 2018 file photo, a patient undergoes dialysis at a clinic in Sacramento, Calif. Results of a study released on Sunday, April 14, 2019 show that the diabetes drug Invokana has been shown to help prevent or delay worsening of kidney disease, which causes millions of deaths each year and requires hundreds of thousands of people to use dialysis to stay alive. (AP Photo/Rich Pedroncelli)

New York Yankees starting pitcher CC Sabathia throws during the first inning of a baseball game against the Chicago White Sox, Saturday, April 13, 2019, in New York. (AP Photo/Kathy Willens)

FILE - In this Dec. 1, 2017, file photo, Brazilian soccer legend Pele attends the 2018 soccer World Cup draw in the Kremlin in Moscow. Pele has successfully undergone surgery for the removal of a kidney stone in a Sao Paulo hospital. The Albert Einstein Hospital said on its website Saturday, April 13, 2019, that Pele's surgery went well, but did not provide additional details. (AP Photo/Alexander Zemlianichenko, File)