From Cyclingnews this morning re Jakob Piil:
"Jakob has got serious concussion and quite a few superficial wounds," said team doctor Joost de Maeseneer on team-csc.com. "This again shows just how important it is that the riders wear a helmet. At the moment there's no sign of any broken bones, but as customary after a bad concussion Jakob is being kept under observation for 24 hours."