Res Ctr Prevent & Hlth, Copenhagen, Denmark.
Univ Leuven, Louvain, Belgium.
Bispebjerg Hosp, DK-2400 Copenhagen NV, Denmark.
Glostrup Univ Hosp, Copenhagen, Denmark.
Shanghai Med Univ 2, Shanghai, Peoples R China.
Royal Coll Surgeons Ireland, Dublin 2, Ireland.