cqvip:Dear editor,With interest we read the recent article on methemoglobinemia by Chan et al.[1]Through this letter,we would like to add few additional comments regarding methemoglobinemia and its relevance in medicine practice with regards to food poisoning.While Chan et al[1]successfully managed their patient of methemoglobinemia and could pinpoint choy sum as the responsible agent,we wonder if there were any more cases of choy sum related to methemoglobinemia detected at the same time in the community?
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