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Prevalence and Risk Factors for Gallstone DiseaseSalinas, G.; Vel??squez, C.; Saavedra, L.; Ram??rez, E.; Angulo, H.; Tamayo, J. C.; Orellana, A.; Huivin, Z.; Valdivia, C.; Rodr??guez, W. · Surgical Laparoscopy, Endoscopy & Percutaneous Techniques · 2004