Diagnosis and treatment

FILE - This July 6, 2018, file photo shows boxes containing petitions in favor of a proposal to legalize casinos in Arkansas, delivered to the Arkansas secretary of state's office in Little Rock, Ark. Voters in several states dominated politically by Republicans have passed ballot initiatives in recent years to expand Medicaid, legalize marijuana, raise the minimum wage and reform the redistricting process. This has led several GOP legislatures and governors to begin cracking down on the initiative process in ways that will make it harder for the public to quality ballot measures. (AP Photo/Andrew Demillo, File)

FILE - In this May 3, 2019 file photo, South Africa's Caster Semenya competes in the women's 800-meter final during the Diamond League in Doha, Qatar. Court documents released publicly for the first time this week reveal previously hidden details of Caster Semenya's 10-year battle with the international track body. In them, the two-time Olympic 800-meter champion said the IAAF accused her of intentionally running slowly at times to mask the alleged advantage she has from her elevated natural testosterone. She angrily denied the accusation. (AP Photo/Kamran Jebreili)

FILE - In this Aug. 17, 2018 file photo, family and friends who lost loved ones to opioid overdoses protest outside the headquarters of Purdue Pharma, maker of the maker of painkiller OxyContin, in Stamford, Conn. The World Health Organization notified U.S. lawmakers Wednesday, June 19, 2019, that it will discontinue two publications on opioid painkiller prescribing, in response to allegations that the pharmaceutical industry influenced the reports. The pledge to remove the guidelines - viewed around the world as best practices in public health - comes a month after U.S. Reps. Katherine Clark and Hal Rogers accused the WHO of being influenced by Purdue. The lawmakers’ report claimed the guidelines were crafted by organizations with financial ties to the company, who worked to downplay risks addiction and overstate the benefits of opioids. Purdue has denied the allegations. (AP Photo/Jessica Hill, File)

Dr. Carlos Reyes-Sacin, left, shows CDC director Robert Redfield inside a telemedicine room at the Medical Advocacy and Outreach clinic in Montgomery, Ala. on Friday, June 14, 2019. (Jake Crandall/Montgomery Advertiser via AP)

Maine Democratic Gov. Janet Mills signs a bill Wednesday, June 12, 2019, in her office in Augusta, Maine, becoming the eighth state to allow terminally ill people to end their lives with prescribed medication. (AP Photo/Marina Villeneuve)

Golden State Warriors forward Kevin Durant (35) walks off the court after sustaining an injury as Toronto Raptors center Serge Ibaka (9) gestures to the crowd during first half basketball action in Game 5 of the NBA Finals in Toronto on Monday, June 10, 2019. (Chris Young/The Canadian Press via AP)

In this March 15, 2019 photo, Brian Jetter poses for a portrait in La Jolla, Calif. In 2018 at 40, he was suddenly battling pneumonia and sepsis, and a slew of tests had failed to find the cause. But a high-tech genetic test was used to search his blood for bits of non-human genetic material from viruses, fungi and the like. It detected unusual bacteria that probably got into the Connecticut man's lungs when he choked and accidentally inhaled bits of a burger weeks earlier. (AP Photo/Marilynn Marchione)

FILE - In this May 10, 2012, file photo, a doctor holds Truvada pills in her office in San Francisco. Studies released on Tuesday, June 11, 2019 show the anti-AIDS treatment also cuts the chances that someone who’s still healthy becomes infected from risky sex or injection drug use. But with nearly 40,000 new HIV infections each year in the U.S., only a fraction of people who could benefit are prescribed the drug for prevention. (AP Photo/Jeff Chiu, File)

Former President Jimmy Carter smiles as he returns to Maranatha Baptist Church to teach Sunday School on Sunday, June 9, 2019, less than a month after falling and breaking his hip, in Plains Ga. A member of the congregation made a special chair for Carter from a boat seat that would raise and lower the president. (Curtis Compton/Atlanta Journal-Constitution via AP)