1. Single dose slow-release aminophylline at night prevents nocturnal asthma;Barnes;Lancet,1982
2. Theophylline prescribing, serum concentrations and toxicity;Woodcock;Lancet,1983
3. The acceptability of two different oral bronchodilators, a comparison;Cochrane;Am Rev Resp Dis,1988
4. An open, multicentre, cross-over comparison of albuterol controlled release tablets and individually titrated slow release theophylline in the treatment of childhood asthma;Zeith;Am Rev Respir Dis,1988
5. A multicentre study of a new controlled release formulation of salbutamol (salbutamol CR) compared with a titrated dose of slow-release theophylline (Theodur) in the treatment of chronic obstructive airways disease;Callaghan;Bull Eur Physiophathol Respir,1986