A randomized trial of polyurethane and silicone percutaneous endoscopic gastrostomy cathetersVAN DEN HAZEL, S. J; MULDER, C. J. J; DEN HARTOG, G et al.Alimentary pharmacology & therapeutics. 2000, Vol 14, Num 10, pp 1273-1277, issn 0269-2813Article

Piperacillin to prevent cholangitis after endoscopic retrograde cholangiopancreatography : A randomized, controlled trialVAN DEN HAZEL, S. J; SPEELMAN, P; DANKERT, J et al.Annals of internal medicine. 1996, Vol 125, Num 6, pp 442-447, issn 0003-4819Article

Biliary excretion of ciprofloxacin and piperacillin in the obstructed biliary tractVAN DEN HAZEL, S. J; DE VRIES, X. H; SPEELMAN, P et al.Antimicrobial agents and chemotherapy. 1996, Vol 40, Num 11, pp 2658-2660, issn 0066-4804Article

Prospective risk assessment of endoscopic retrograde cholangiography in patients with primary sclerosing cholangitisVAN DEN HAZEL, S. J; WOLFHAGEN, F. H. J; VAN BUUREN, H. R et al.Endoscopy (Stuttgart). 2000, Vol 32, Num 10, pp 779-782, issn 0013-726XArticle

Role of antibiotics in the treatment and prevention of acute and recurrent cholangitisVAN DEN HAZEL, S. J; SPEELMAN, P; TYTGAT, G. N. J et al.Clinical infectious diseases. 1994, Vol 19, Num 2, pp 279-286, issn 1058-4838Article