Terms: Cancer Oncology (1,120,000), oncology cancer (945,000), cancer (730,000,000), oncology (71,200,000),
Boolean: cancer +oncology (39,400,000), cancer -oncology (694,000,000), oncology -cancer (33,100,000), cancer OR oncology (765,000,000),
Boolean: oncology OR oncologist (77,800,000), oncology +oncologist (3,770,000), oncology -oncologist (67,500,000), oncologist -oncology (5,240,000), oncologist (9,000,000),