REFERENCES
- Ahlgren, S.-A. & Lörstad, M. 1965. Renal and ureteral calculi in a Swedish district. I-II. Acta Chir Scand 130, 344.
- Almby, B., Meirik, O. & Schönebeck, J. Renal and ureteral calculi in a circumscribed area—incidence, morbidity and complications. Scand J Urol Nephrol. To be published.
- Andersen, D. A. 1969. Historical and geographical differences in the pattern of incidence of urinary stones considered in relation to possible aetiological factors. In Renal stone research symposium (ed. A.Hodgkinson & B. E. C.Nordin), pp. 7–31. Churchill, London.
- Andersen, D. A. 1972. History of bladder stone disease. Personal communication.
- Blacklock, N. J. 1969. The pattern of urolithiasis in the Royal Navy. In Renal stone research symposium (ed. A.Hodgkinson & B. E. C.Nordin), pp. 33–47. Churchill, London.
- Granberg, P.-O. 1972. Vad händer inom endokrin kirurgi? Läkartidningen 69, 2175.
- Hedenberg, I. 1951. Renal and ureteral calculi, a study of the occurrence in Sweden 1911-1938 with some notes on the geographical distribution. Acta Chir Scand 101, 17.
- Hellström, J. 1932. Förefinnes en stigande frekvens av urinvägskonkrementen i Sverige? Hygiea 34, 337.
- Hellström, J. 1935. Njur- och uretersten. Nord Kir Fören Förhandl.
- Hellström, J. & Ivemark, B. I. 1962. Primary hyperpara-thyreoidism. Acta Chir Scand, Suppl. 294.
- Hodgkinson, A. & Nordin, B. E. C. (ed.) Renal stone research symposium. Churchill, London.
- Larsen, J. F. & Philip, J. 1962. Studies on the incidence of urolithiasis. Urol Int 13, 53.
- Mates, J. 1969. External factors in the genesis of urolithiasis. In Renal stone research symposium (ed. A.Hodgkinson & B. E. C.Nordin), pp. 59–64. Churchill, London.
- Scott, R. 1971. The incidence of renal colic in the medical profession in the west of Scotland. Health Bull (Edinb) 29, 27.
- Editorial. 1971. Renal stone in top people. Br Med J II, 668.
- Official Statistics of Sweden 1953-1955 and 1968-1970. Stockholm 1954-1956 and 1969-1971.