Authors: Kratzer, W Kachele, V Merkle, E Mason, RA Buchner, M von Tirpitz, C Pfeiffer, M

Citation: W. Kratzer et al., Contrast enhanced power Doppler sonography: Comparison of different administration forms of the ultrasound contrast agent Levovist (R), ROFO-F RONT, 172(5), 2000, pp. 443-448

Authors: Kratzer, W Kachele, V Merkle, E Mason, RA Buchner, M von Tirpitz, C Pfeiffer, M

Citation: W. Kratzer et al., Contrast enhanced power Doppler sonography: Comparison of different administration forms of the ultrasound contrast agent Levovist (R) (vol 172, pg 443, 2000), ROFO-F RONT, 172(11), 2000, pp. 947-947

Authors: Kachele, V Wabitsch, M Hay, B Pfeiffer, MM Adler, G Kratzer, W

Citation: V. Kachele et al., Cholecystolithiasis in children and adolescents - influence of obesity andother factors, MONATS KIND, 148(6), 2000, pp. 600-604

Authors: Kratzer, W de Lazzer, K Wiesneth, M Muche, R Kachele, V

Citation: W. Kratzer et al., Relationship between ABO, Rhesus and Kell blood group antigens and gallstone prevalence. A sonographic survey on 1030 blood donors, DEUT MED WO, 124(19), 1999, pp. 579-583

Authors: Kratzer, W Mason, RA Kachele, V

Citation: W. Kratzer et al., Prevalence of gallstones in sonographic surveys worldwide, J CLIN ULTR, 27(1), 1999, pp. 1-7

Authors: Kratzer, W Kron, M Hay, B Pfeiffer, MM Kachele, V

Citation: W. Kratzer et al., Prevalence of cholecystolithiasis in Southwestern Germany - a sonographic survey of 2,498 persons in a rural population, Z GASTROENT, 37(12), 1999, pp. 1157-1162