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2. The randomised controlled trial for the evaluation of new technology: a case study;Challah, S.; Mavs, N.B.,1986
3. Fragmentation of gallstones bv extracorporeal shock waves;Sauerbruch, T.; Delius, M.; Paumgartner, G.;N Engli Med,1986
4. Shock-wave lithotripsy of gallbladder stones. The first 175 patients;Sackmann, M.; Delius, M.; Sauerbruch, T.;N Engli Med,1988
5. Painless lithotripsv: experience with 100 patients;Philip, T.; Kellett, M.J.; Whitfield, H.N.; Wickham, J.E.A.;Lancet,1988