Complex sentence: He has provided medical lectures at various medical society meetings including at Radiological Society of North America which is the world's largest medical society meeting, drawing 60,000 + attendees including physicians, nurses, and biophysicists every year.
Split into simpler sentences: He has provided medical lectures at various medical society meetings including Radiological Society of North America. RSNA (Radiological Society of North America) is the world's largest medical society meeting, drawing 60,000 + physicians, nurses, and physicists every year.