1. Serum theophylline levels in asthmatic children after oral administration of two slow release preparations;SA, I.McKenzie; E, Baillie;Arch Dis Child,1978
2. Evaluation of oral bronchodilator therapy in asthmatic children;Weinberger, M.; Bronsky, E.A.;J Pediatr,1974
3. Controlled trial of cromoglycate and slow-release aminophylline in perennial childhood asthma;Edmunds, A.T.; Carswell, F.; Robinson, P.; Hughes, A.O.,1980
4. Clinical application of serum theophylline measurement by high pressure liquid chromatography;McKenzie, S.A.; Edmunds, A.T.; Baillie, E.; Meek, J.;Arch Dis Child,1978
5. The two period crossover clinical trial;Hills, M.; Armitage, P.;Br J Clin Pharmacol,1979