Last week we noted that Fresenius Kabi, a drug firm, forbids the use of its drugs in executions ("Cruel and unusable," November 2nd). We said: "When the firm learned that Missouri's Department of Corrections had obtained an unsanctioned batch, it curbed shipments, threatening shortages in hospitals." We would like to clarify: had the drug in question been used for an execution, EU sanctions would have kicked in, and this might have caused shortages in hospitals.