Suppliers
- a
Lung Volume Recruitment Kit; Trudel Medical Marketing Ltd, 758 Third St, London, ON N5V 5J7, Canada.
- b
Medical Graphics Corp, 350 Oak Grove Parkway, St. Paul, MN 55127.
- c
Micro Medical Ltd, The Crescent, Jays Close, Bassingstoke RG22 4BS, UK.
- d
Mini-Wright Peak Flow Meter; Clement Clark International Ltd, Edinburgh Way, Harlow, Essex CM20 2TT, UK.
- e
R: A language and environment for statistical