%0 Letter %T Methemoglobinemia Outbreak in a Neonatal ICU and Maternity Ward. %A Takahashi S %A Ishige T %A Takizawa T %J N Engl J Med %V 389 %N 25 %D 2023 Dec 21 %M 38118033 %F 176.079 %R 10.1056/NEJMc2308125