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LOS ANGELES, CA - APRIL 13: (L-R) Musicians Flea, Chad Smith, Anthony Kiedis and John Frusciante of Red Hot Chili Peppers perform onstage during the launch of the Parker Institute for Cancer Immunotherapy, an unprecedented collaboration between the country's leading immunologists and cancer centers on April 13, 2016 in Los Angeles, California. (Photo by Kevin Mazur/Getty Images for Parker Media)

LOS ANGELES, CA - APRIL 13:  (L-R) Musicians Flea, Chad Smith, Anthony Kiedis and John Frusciante of Red Hot Chili Peppers perform onstage during the launch of the Parker Institute for Cancer Immunotherapy, an unprecedented collaboration between the country's leading immunologists and cancer centers on April 13, 2016 in Los Angeles, California.  (Photo by Kevin Mazur/Getty Images for Parker Media)