Affiliation: | 1.Department of Intensive Care, Päijät-Häme Central Hospital, Keskussairaalankatu 7, FI 15850 Lahti, Finland;2.Department of Intensive Care, Kuopio University Hospital, P.O. Box 1777, FI 70211 Kuopio, Finland;3.Department of Intensive Care, Tampere University Hospital, P.O. Box 2000, FI 33521 Tampere, Finland;4.Department of Intensive Care, South Carelian Central Hospital, Valto Käkelän katu 1, FI 53130 Lappeenranta, Finland |