[Methode der Erkennung von Syphilis im Sekundärstadium durch Ertasten des epitrochlearen Lymphknotens]
The provisions of this Convention shall preclude neither the application of restrictions and controls imposed under national regulations on grounds of public morality, public security, hygiene or public health, or for veterinary or phytopathological reasons, nor the levy of dues chargeable by virtue of such regulationslangbot langbot