Synopsis of stones used in this study with details of preventive treatment and genotype.

Asterisk denotes stones from newly-diagnosed and at the time untreated patients.1stone composition determined by multiple spot analyses on one polished surface. UL = Urolithiasis, NC = Nephrocalcinosis, HCT = Hydrochlorothiazide, GFR = Glomerular Filtration Rate, p.resp. = partly responsive to vit. B6 treatment.