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. 2013 Oct 4;8(10):e74887. doi: 10.1371/journal.pone.0074887

Table 2. Proportion of different subtypes of mixed stones.

Subtype No. Rate
Cholesterol- bilirubinate mixed 30 23.3%
Bilirubinate -calcium carbonate mixed 44 34.1%
Cholesterol- calcium carbonate mixed 21 16.3%
Bilirubinate -phosphate mixed 14 10.9%
Cholesterol-phosphate mixed 4 3.1%
Bilirubinate-calcium stearate mixed 2 1.6%
Calcium carbonate-phosphate mixed 2 1.6%
Cholesterol- bilirubinate -calcium carbonate mixed 6 4.7%
Bilirubinate -calcium carbonate- phosphate mixed 3 2.3%
Cholesterol- bilirubinate -phosphate mixed 2 1.6%
Cholesterol- calcium carbonate- calcium stearate mixed 1 0.8%
Total 129 100.0%