S64 the cost of refractory asthma in the uk - a preliminary analysis

O'Neill, S

; 

Sweeney, J

; 

Neill, C O

; 

Brightling, C

; 

Menzies-Gow, A

; 

Niven, R

; 

Chaudrai, R

; 

Bucknall, C

; 

Mansur, A

; 

Patterson, C