Zofia ‘Zosia’ Piotrowska, left, checks sores in Diane Legg's mouth last month in Danvers, Massachusetts. Legg is undergoing treatment for lung cancer.
Zofia ‘Zosia’ Piotrowska, left, checks sores in Diane Legg's mouth last month in Danvers, Massachusetts. Legg is undergoing treatment for lung cancer. JAMIE COTTEN For The Washington Post
Zofia ‘Zosia’ Piotrowska, left, checks sores in Diane Legg's mouth last month in Danvers, Massachusetts. Legg is undergoing treatment for lung cancer. JAMIE COTTEN For The Washington Post

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