Buls, N. et al.: Patient and staff exposure during endoscopic retrograde cholangiopancreatography. British Journal of Radiology, 2002, nro 75, s. 435–443. Artikkelin verkkoversio. (Arkistoitu – Internet Archive)
Buls, N. et al.: Patient and staff exposure during endoscopic retrograde cholangiopancreatography. British Journal of Radiology, 2002, nro 75, s. 435–443. Artikkelin verkkoversio. (Arkistoitu – Internet Archive)