TY  - BOOK
AU  - Florey C du V.
AU  - Leeder, S.R.
TI  - Methods for cohort studies of chronic airflow limitation
T2  - WHO Regional publications, European series
SN  - 92890112033
PY  - 1982///
CY  - Copenhagen : 
PB  - WHO Regional office for Europe
KW  - Respiratory tract diseases
KW  - Data collection
UR  - https://iris.who.int/handle/10665/272812
ER  -