Dr. Heinzmann from the Grünenthal sales office in Koblenz alerted Grünenthal about a pharmacist who complained about remarkably cold feet and hands after taking Contergan forte.

Source: Anklageschrift (indictment) from 1967, today archived at the National Archives of North Rhine-Westphalia in Duisburg, Germany (Rheinland Division, Gerichte Rep. 139, No. 1–396), p. 75.