Conflicts of interest
YK received honoraria for lectures from AstraZeneca (AZ),
GlaxoSmithKline (GSK) and Sanofi; KS received honoraria for lectures
from AZ, GSK, Kyorin Co, Ltd, Novartis, Sanofi and Taiho Co, Ltd; MT
received honoraria for lectures from AZ, GSK, Novartis and Sanofi and
grant support from GSK