"a number of doctors are challenging the study s claims" in German A number of doctors are challenging the study's claims. Eine Reihe von Ärzten zweifelt die Thesen der Studie an. Detailed translations for "a number of doctors are challenging the study s claims" A number of doctors are challenging the study's claims. A number of doctors are challenging the study's claims. Eine Reihe von Ärzten zweifelt die Thesen der Studie an.