All of the following substances are linked to the formation of kidney stones EXCEPT ________.

The ________ position is a type of prone position in which the patient lies on his or her abdomen with the hips flexed into an inverted "V" position

A. Fowler's C. jackknife or Kraske B. prone D. dorsal recumbent

People with which blood type are universal donors? 

A. A B. B C. AB D. O