1. The first intensive care unit in the world: copenhagen 1953;Berthelsen;Acta Anaesthesiol Scand,2003
2. From intensive care to critical care medicine: a historical perspective;Weil;Am J Respir Crit Care Med,2011
3. Elements of progression and patient care US Gov Print Off;United States Public Health Service,1962
4. A facility designed for coronary care;United States Public Health Service,1965
5. In praise of open visiting;Garton;Nurs Times,1979