TY  - JOUR
A1  - Strachan, D.P.
T1  - Family size, infection and atopy: The first decade of the'hygiene hypothesis'
Y1  - 2000
DO  - 10.1136/thorax.55.suppl_1.S2
JF  - Thorax
VL  - 55
IS  - Suppl. 1

ER  -