RT Journal Article
SR Electronic
T1 Smoking pack years calculator
JF British Journal of General Practice
JO Br J Gen Pract
FD British Journal of General Practice
SP 230
OP 230
DO 10.3399/bjgp20X709553
VO 70
IS 694
A1 Nigel J Masters
YR 2020
UL http://bjgp.org/content/70/694/230.2.abstract
AB