even though the evidence isn't conclusive about bpa's link to cancer or other problems, michael thun, the american cancer society's vice president of epidemiology and surveillance research, says limiting exposure is "prudent."

How would the previous sentence be correctly capitalized?
Even though the evidence isn't conclusive about BPA's link to cancer or other problems, Michael Thun, the American Cancer Society's vice president of Epidemiology and Surveillance Research, says limiting exposure is "prudent."