AshleyA.W., GrossE.R., GellertA., ShahS., JohnsonM., GeddesD.M.Effects of dihydrocodeine, alcohol and caffeine on breathlessness and exercise tolerance in patients with chronic destructive lung disease and normal blood gases.N Eng J Med1981; 305/27: 1611–16.
2.
BarnardJ. ed. John Keats. The complete poems.2nd ed.Harmondsworth, Middlesex: Penguin Books Ltd., 1977.
3.
First International Conference on the Palliative Care of the Elderly. Toronto, May 4-6, 1989.