PAUL MONIZ: Dr. Marks, what about the stones themselves? How big can they get and how long does it take for them to form? JON MARKS, MD: That...

PAUL MONIZ: Dr. Marks, what exactly are kidney stones? JON MARKS, MD: Kidney stones are combinations of protein, calcium, and various other...

LISA CLARK: I'm Lisa Clark. Welcome, and thank you for joining us for this webcast. Many cases of kidney disease in the United States are linked to...