Abstract

References
1.
Helmstein K.
(1964 ) Acta chirurgica Scandinavica , Suppl 340
2.
Lipsky H.
, &
Hubmer G.
(1977 ) British Journal of Urology 49 , 725 –728
3.
Murphy L.G.
(1972 ) History of Urology. Charles C Thomas , Springfield, Illinois ; p 432
4.
Ravasini G.
(1957 ) Urologia 24 , 229 –232
5.
Sachse von H.
(1974 ) Fortschritte der Medizin 10 , 12 –15
