Diagnosis and treatment

FILE - This May 1, 2018 file photo shows Merck corporate headquarters in Kenilworth, N.J. Merck & Co. reports earnings Friday, Feb. 1, 2019. Merck & Co., Inc. reports financial results on Tuesday, July 30, 2019. (AP Photo/Seth Wenig, File)

FILE - In this July 8, 2016, file photo, a prescription is filled at Pucci's Pharmacy in Sacramento, Calif. Four pharmaceutical companies are agreeing to pay California nearly $70 million to settle allegations that they delayed drugs to keep prices high. California Attorney General Xavier Becerra said Monday, July 29, 2019, that the bulk of the money will come from Teva Pharmaceutical Industries for paying to delay a generic narcolepsy drug from entering the market for nearly six years. (AP Photo/Rich Pedroncelli, File)

FILE - This Sept. 17, 2015, file photo shows a sign barring smoking at the state Capitol in Oklahoma City. The signs were paid for by the Oklahoma Health Department, which works in conjunction with the Tobacco Settlement Endowment Trust to reduce smoking. Fifteen years after its creation, programs launched by the Tobacco Settlement Endowment Trust have dramatically reduced tobacco use among Oklahomans. (AP Photo/Sue Ogrocki, File)

Cancer patient Kim Lauerman poses for a portrait in her home Wednesday, June 26, 2019, in Alpharetta, Ga. After Lauerman was diagnosed with ovarian cancer, doctors wanted to give her a drug that helps prevent infections and fever during chemotherapy. Her insurer said no. Doctors say they worry about the growing influence insurers have over patient care. They say treatment delays and the problems they create are becoming common because routine things like imaging exams or prescriptions now require insurer approval first. (AP Photo/John Bazemore)

In this Wednesday, July 17, 2019, photo, Laurie Barber, a Little Rock, Ark., ophthalmologist, talks with patient Carolyn Lay at the Little Rock Eye Clinic. Barber chairs a group that wants to hold a referendum on a new Arkansas law that expands the procedures that optometrists can perform. Arkansas optometrists who say they have to refer patients sometimes as far as an hour away successfully urged the Legislature this year to expand what procedures they can perform. But that change sparked an expensive and heated lobbying fight, and now faces the prospect of going before voters next year. (AP Photo/Andrew DeMillo)

In this June 15, 2018 photo, pharmaceuticals are seen in North Andover, Mass. A prescription drug compromise that would lower costs for Medicare recipients has cleared a key hurdle in the Senate, but Republican resistance signals trouble when the legislation goes to the floor. (AP Photo/Elise Amendola, File)

FILE - This April 30, 2007, file photo, shows the headquarters of Cardinal Health in Dublin, Ohio. An executive at Cardinal Health, one of the nation’s largest drug distribution companies, said in a legal proceeding that the business has no obligation to the public when it comes to shipping prescription opioid painkillers. That’s one of the disclosures in thousands of pages of court documents made public July 23, 2019, in lawsuits over the opioid crisis. (AP Photo/Kiichiro Sato, File)

In this June 15, 2018 photo, pharmaceuticals are seen in North Andover, Mass. Two senior senators — a Republican and a Democrat — unveiled compromise legislation Tuesday to reduce prescription drug costs for millions of Medicare recipients, while saving money for federal and state health care programs that serve seniors and low-income people. (AP Photo/Elise Amendola)