In this Tuesday, Aug. 4, 2015 file photo, a nurse places a patient's chemotherapy medication on an intravenous stand at a hospital in Philadelphia.
In this Tuesday, Aug. 4, 2015 file photo, a nurse places a patient's chemotherapy medication on an intravenous stand at a hospital in Philadelphia. Matt Rourke AP
In this Tuesday, Aug. 4, 2015 file photo, a nurse places a patient's chemotherapy medication on an intravenous stand at a hospital in Philadelphia. Matt Rourke AP