Report summary

For Harvard University Department of Surgery in 2015-2026, the graph shows 119 visible PIs and 250 internal PI collaborations. The main research signal is Medicine as the leading field (57% of slots across 110 PIs; 110 labels), Surgery as the leading subfield (15% of slots across 46 PIs; 46 labels), and Cardiac, Anesthesia and Surgical Outcomes as the leading topic (2% of slots across 7 PIs; 7 labels). That is a healthy pattern, with enough links to reveal several interpretable groups rather than one undifferentiated component. The most prominent PIs by weighted works are Quoc‐Dien Trinh (101.7 weighted works; Bladder and Urothelial Cancer Treatments, Global Cancer Incidence and Screening). The clearest collaboration lines are Christopher S. Ogilvy and Ajith J. Thomas (104 shared works, weight 45.5); Samuel J. Lin and Bernard T. Lee (90 shared works, weight 42.3). The strongest breakdown groups are group 1 with 10 PIs, 10 internal connections, weight 75.5, around Emergency Medicine, Epidemiology, Public Health, Environmental and Occupational Health, led by Quoc‐Dien Trinh, Julie K. Silver, Jeffrey C Schneider.