I Indoor Air Quality in Hospitals: the Issues.- 1. Indoor Air Quality in Hospitals: not just Another Building.- 2. Indoor Air Quality Problems in Hospitals.- 3. Occupational Health Hazards following Exposure of Hospital Personnel to Chemical Agents.- 4. Microbial Contamination of Buildings in Temperate Climates.- 5. Indoor Air Quality Problems in Russian Hospitals.- II Ventilation Requirements in Hospitals.- 6. Ventilation Requirements for Hospitals in the USA.- 7. Design Criteria of Ventilation for Hospitals.- 8. Ventilation and Indoor Air Quality Requirements in Hospitals: Filtration and Microbials.- 9. Controlling Aerial Transmission of Aspergillosis, Legionellosis and Drug-Resistant Tuberculosis in Hospitals.- 10. Pressure and Ventilation Requirements of Hospital Isolation Rooms for Tuberculosis (TB) Patients: Existing Guidelines in the United States and a Method for Measuring Room Leakage.- 11. Bacterial Control through Contamination Control in Operating Theatres.- 12. Dynamic Modeling of Indoor Air Contaminant Levels in Medical Environments.- III Chemical and Biological Air Pollution in Hospitals.- 13. Aerosol Size Distribution and Concentration in Various Units of a Children's Hospital.- 14. Airborne Microbial Contamination and Hospital Infections.- 15. Evaluation of Airborne Microbic Contamination in Two Hospital Wards.- 16. Interest of Mycological Controls of the Environment in a Hematological Unit.- 17. Assessment of Outdoor Chemical and Microbial Pollution on Global Indoor Air Quality in Hospitals.- 18. Air Quality in Operating Suites: Evaluation of Microclimate and Microbial Contamination.- 19. Air Quality in Operating Theatres: the Occupational Point of View.- 20. Follow up of Anesthetic Gases Exposure and Health Effects in a Regional Hospital of Northern Italy.- 21. Personnel's Well-Being and Indoor Air Pollution in the Operating Rooms.- 22. Contribution to Treatment of Unhealthy Operating Rooms in Hospitals.- 23. Health Risks due to Chemical Substances Exposure in Biomedical Laboratories.- 24. Cost Assessment of the Sick Hospital Syndrome: a Case Study.- 25. Thermal and Humidity Comfort or Heat Stress in Hospital?.- IV Airborne Allergens in Hospitals.- 26. Immunochemical Quantification of Airborne Natural Rubber Allergens in Medical and Dental Office Buildings.- 27. Levels of Mite, Cat and Dog Allergen in the Furnishings of Hospital Wards.- V Technical Aspects of Ventilation in Hospitals and Strategies for Air Quality Management.- 28. Organization and Management of Hospital Buildings: Healthy Micro-Environment and Quality through Information System.- 29. The Effect of Duct Design in the Air Conditioning Plants on Air Quality.- 30. Design Parameters and Economical Aspects in Ventilation Systems for Bone Marrow Transplant Patients.- 31. Pressure Hierarchy and Indoor Climate of Hospital Rooms.- 32. Reduction of the Hospital ETS Exposure.- 33. Lessons learned from a Legionnaire's Outbreak in the Midatiantic U.S..- 34. Partnering: the Collaborative Approach to Minimizing the Legal and Economic Consequences of Inadequate Hospital Planning.- VI Conclusions and Recommendations.- 35. NATO Advanced Research Workshop "Ventilation and Indoor Air Quality Requirements in Hospitals": Conclusions and Recommendations.