1. Disabling chest disease: prevention and care;of Physicians, Royal College;I R CollPhysicians Lond,1981
2. A comprehensive care programme for chronic airway obstruction. Methods and preliminary evaluation of symptomatic and functional improvement;Ann Inern Med
3. Home care of chronic respiratory disease;Cherniack, R.M.; Handford, R.G.; Svanhill, E.;JAMA
4. A scaled version of the general health questionnaire;Goldberg, D.P.; Hillier, V.F.;Psychol Med,1978
5. A set of descriptions and a psychometric scale of severity of illness: an indicator for use in evaluating the outcome of hospital care;Rosser, R.M.,1980