RT Journal Article SR Electronic T1 Correction and addendum: oxygen in the home (August 20, p.65) JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 92 OP 92 DO 10.1136/dtb.20.23.92 VO 20 IS 23 YR 1982 UL http://dtb.bmj.com/content/20/23/92.abstract AB Portable oxygen cylinders: The 100 litre size is no longer made. The 230 litre cylinder may be too heavy for some patients to carry.