Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. The other half had been sued at least twice, and Levinson found that just on the basis of those conversations, she could find clear differences between the two groups.
B. Recently the medical researcher Wendy Levinson recorded hundreds of conversations between a group of physicians and their patients.
C. The surgeons who had never been sued spent more than three minutes longer with each patient than those who had been sued did.
D. Roughly half of the doctors had never been sued.