Why in hospital following transoral robotic lingual tonsillectomy?

Mikkel Hjordt Holm Larsen 1, Hani Ibrahim Channir 1, Anne Kathrine Østergaard Madsen 1, Niclas Rubek 1, Padraig O'Leary 2, Thomas Kjærgaard 2, Henrik Kehlet 3, Christian von Buchwald 1