X Vandemergel, B Renneboog: Prevalence, aetiologies and significance of clubbing in a department of general internal medicine. European Journal of Internal Medicine, heinäkuu 2008, 19. vsk, nro 5, s. 325–329. PubMed:18549933. doi:10.1016/j.ejim.2007.05.015. ISSN 1879-0828. Artikkelin verkkoversio.
X Vandemergel, B Renneboog: Prevalence, aetiologies and significance of clubbing in a department of general internal medicine. European Journal of Internal Medicine, heinäkuu 2008, 19. vsk, nro 5, s. 325–329. PubMed:18549933. doi:10.1016/j.ejim.2007.05.015. ISSN 1879-0828. Artikkelin verkkoversio.
X Vandemergel, B Renneboog: Prevalence, aetiologies and significance of clubbing in a department of general internal medicine. European Journal of Internal Medicine, heinäkuu 2008, 19. vsk, nro 5, s. 325–329. PubMed:18549933. doi:10.1016/j.ejim.2007.05.015. ISSN 1879-0828. Artikkelin verkkoversio.
O Epstein, R Dick, S Sherlock: Prospective study of periostitis and finger clubbing in primary biliary cirrhosis and other forms of chronic liver disease. Gut, maaliskuu 1981, 22. vsk, nro 3, s. 203–206. PubMed:7227854. ISSN 0017-5749. Artikkelin verkkoversio.
O Epstein, R Dick, S Sherlock: Prospective study of periostitis and finger clubbing in primary biliary cirrhosis and other forms of chronic liver disease. Gut, maaliskuu 1981, 22. vsk, nro 3, s. 203–206. PubMed:7227854. ISSN 0017-5749. Artikkelin verkkoversio.
X Vandemergel, B Renneboog: Prevalence, aetiologies and significance of clubbing in a department of general internal medicine. European Journal of Internal Medicine, heinäkuu 2008, 19. vsk, nro 5, s. 325–329. PubMed:18549933. doi:10.1016/j.ejim.2007.05.015. ISSN 1879-0828. Artikkelin verkkoversio.
O Epstein, R Dick, S Sherlock: Prospective study of periostitis and finger clubbing in primary biliary cirrhosis and other forms of chronic liver disease. Gut, maaliskuu 1981, 22. vsk, nro 3, s. 203–206. PubMed:7227854. ISSN 0017-5749. Artikkelin verkkoversio.