From June to October 1960, Grünenthal was informed about at least 60 to 70 new cases of polyneuritis by 25 additional doctors and pharmacists.
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. 97.