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To the Editor:—
The ampul of methylene blue used in our patient was not kept in a detergent solution, in alcohol, or in phenol; it was used as provided by the manufacturer, the ampul head merely being wiped with iodine before being broken open. I be
Evans JP. INTRATHECAL USE OF METHYLENE BLUE-Reply. JAMA. 1959;170(18):2232. doi:10.1001/jama.1959.03010180084024
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