what is renal calculi, describing in detail of what it is and what it does within the body. and then how we can treat it in the pre-hospital setting as in what to look for like signs and symptoms of renal calculi, ways to identify renal calculi and treatment for it in the field on the ambulance for paramedics. Then how hospitals can treat renal calculi in the hospital setting. then just conclude with how it is important to properly assess patients with renal calculi in the prehospital setting so the patient can have the best outcome. i need 3 cited resourses and they need to be from 2015 or newer.