Não informado. (2020). New England Journal of Medicine. Massachusetts Medical Society.
Chicagoスタイル(17版)引用形式Não informado. New England Journal of Medicine. Waltham, Mass: Massachusetts Medical Society, 2020.
MLA(8版)引用形式Não informado. New England Journal of Medicine. Massachusetts Medical Society, 2020.
警告: この引用は必ずしも正確ではありません.