Protective effects of farming on allergies and asthma: have we learnt anything since 1873?

Farm exposure in utero may protect against asthma, hay fever and eczema

(2008) J. Douwes et al.   EUROPEAN RESPIRATORY JOURNAL

Exposure-response analysis of allergy and respiratory symptoms in endotoxin-exposed adults

(2008) L. A. M. Smit et al.   EUROPEAN RESPIRATORY JOURNAL

The triumph of the null hypothesis: epidemiology in an age of change

(2008) W. Maziak   INTERNATIONAL JOURNAL OF EPIDEMIOLOGY

Response: Time for species--course epidemiology?

(2008) N. Pearce et al.   INTERNATIONAL JOURNAL OF EPIDEMIOLOGY

Commentary: The end of the hygiene hypothesis?

(2008) J. Douwes et al.   INTERNATIONAL JOURNAL OF EPIDEMIOLOGY

The protective effect of farm animal exposure on childhood allergy is modified by NPSR1 polymorphisms

(2008) S Bruce et al.   JOURNAL OF MEDICAL GENETICS