sentences:  ), and completed residency training in pathology at that institution and the Mayo Clinic in Rochester, MN in the U.S. Weedon has authored two notable books in the field of pathology.The first focused on diseases of the gallbladder, and the second text, on dermatopathology, is widely considered to be the most encyclopedic reference work on the histomorphology of skin diseases.It is titled "Skin Pathology."