Terminal lung cancer – elderly patient who leaves alone and wants died at home

I need a research paper base on elderly patient who leaves alone with terminal lung cancer he wish to die at his home also his widower and don’t want anyone from his family to know .This paper need a PICO format. Please the question on PICO as base in this patient situation : alone elderly male patient how has terminal lung cancer he has 3 grandkids but don’t want then or anyone from his family to know his other wish is to died at his house .
Thank you !

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