1. Ashton A.(1795) "An Inaugural Dissertation on the Influence of One Disease in the Cure of Others" printed by Alexander McKenzie Philadelphia
2. quoted byHench P. S.(1940) loco citato.
3. Aschner B.(1947) “The Art of Healing” Research Books Ltd.
4. Assman H. et alii(1939) “Lehrbuch der inneren Medizin“ 4th Ed. 712.
5. The Relief of Nephrosis after Hepatitis;Berger H.;J.A.M.A.,1951