Alzheimer's Disease, Aortic Surgery, Aplastic Anaemia, Bacterial Meningitis, Benign Brain Tumour, Blindness, Coma, Coronary Artery Bypass, Deafness, Heart Attack, Heart Valve Replacement, Kidney Failure, Life-Threatening Cancer, Loss of Independent Existence, Loss of Limbs, Loss of Speech, Major Organ Transplant, Motor Neuron Disease, Multiple Sclerosis, Occupational HIV Infection, Paralysis, Parkinson's Disease, Severe Burns, and |