Research Article Theophylline in the management of airflow obstruction. 1. Much evidence suggests that theophylline is valuable. BMJ 1990; 300 doi: https://doi.org/10.1136/bmj.300.6729.928 (Published 07 April 1990) Cite this as: BMJ 1990;300:928 Article Related content Metrics Responses Peer review This is a PDF-only article. The first page of the PDF of this article appears below.