The University of Leeds is acclaimed world-wide for the quality of its teaching and research. One of the largest universities in the UK, Leeds is also the most popular among students applying for undergraduate courses. An emphasis on innovative research and investment in high-quality facilities and first-rate infrastructure means that no fewer than 35 departments are rated internationally or nationally 'excellent'. Leeds is one of Britain's largest and most popular universities with than thirty-three thousand students and just under 7,500 staff, including four thousand academic and academic-related staff. The University has departments in all major disciplines and more than fifty interdisciplinary centres. Trinity and All Saints College and the College of Ripon and York are affiliated to the University. The University is also associated with Leeds General Infirmary and St James's University Hospital, which together make up the Leeds Teaching Hospitals NHS Trust.