Dr Klein is board certified in anatomic and clinical pathology, hematopathology and molecular genetic pathology.  He earned his medical degree from Sackler School of Medicine, New York State program, Tel Aviv, Israel. He completed his residency in Anatomic and Clinical Pathology at Winthrop University Hospital, Mineola NY, where he served as chief resident and performed his fellowship training in Hematopathology and Molecular Genetic Pathology at Washington University – Barnes Jewish Hospital, St.

Dr Dong is board certified in anatomic pathology and hematopathology. He earned his medical degree from Beijing Medical University and his PhD in molecular cell biology from the Albert Einstein College of Medicine. He was a postdoctoral research fellow at the Dana Farber Cancer Institute. Dr Dong completed his pathology residency at Massachusetts General Hospital followed by a Vickery fellowship in surgical pathology and a James Homer fellowship in hematopathology.