A Grünenthal employee informed the headquarters in Stolberg about a doctor who detected paraesthesia in two of her patients who had taken Contergan (Thalidomide). Grünenthal’s Dr. Werner and Dr. Sievers responded, again denying any knowledge: “We believe a causal connection to Contergan is unlikely, since we haven’t heard or seen something of that sort so far.” (Dec. 30, 1959). At this point Grünenthal had already heard from Dr. Voss, Dr. Sartorius, Dr. Consten, Dr. Piacenza, Dr. Kreideweiss, Dr. Heinzmann, Dr. Angermann and pharmacist Kaben. They all reported similar symptoms in connection with Contergan.
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. 78.