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Univ Helsinki, Cent Hosp, Natl Inst Hlth & Welfare, Ctr Hlth & Social Econ CHESS, Helsinki, Finland
Univ Helsinki, Cent Hosp, Hanken Sch Econ, Dept Finance & Stat, Helsinki, Finland Univ Helsinki, Cent Hosp, Natl Inst Hlth & Welfare, Ctr Hlth & Social Econ CHESS, Helsinki, Finland