Patel, M S An investment appraisal of alternative technologies for the treatment of stones in the kidney and ureter. [electronic resource] - Community medicine Aug 1986 - 191-8 p. digital Publication Type: Journal Article ISSN: 0142-2456 Standard No.: 10.1093/oxfordjournals.pubmed.a043854 doi Subjects--Topical Terms: HumansKidney Calculi--economicsLithotripsy--economicsNephrostomy, Percutaneous--economicsTechnology, High-Cost--economicsUnited KingdomUreteral Calculi--economics