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Steve Collis, president and chief executive officer of AmerisourceBergen Corp., testifies during a House Energy and Commerce Subcommittee hearing in Washington, D.C., U.S., on Tuesday, May 8, 2018. Recent news reports about West Virginia allege that millions of prescription drugs were delivered to pharmacies, numbering far beyond what the population of West Virginia could possibly need, the committee said. Photographer: Aaron P. Bernstein/Bloomberg via Getty Images

Steve Collis, president and chief executive officer of AmerisourceBergen Corp., testifies during a House Energy and Commerce Subcommittee hearing in Washington, D.C., U.S., on Tuesday, May 8, 2018. Recent news reports about West Virginia allege that millions of prescription drugs were delivered to pharmacies, numbering far beyond what the population of West Virginia could possibly need, the committee said. Photographer: Aaron P. Bernstein/Bloomberg via Getty Images

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Young Man having Chemotherapy at home.

Young Man having Chemotherapy at home.

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Woman Breast Cancer Patient Receiving Chemotherapy

Woman Breast Cancer Patient Receiving Chemotherapy

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Chemotherapy Patient

Chemotherapy Patient

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Cancer Patient in Hospital

Cancer Patient in Hospital