It is the time, not the ratio.
Droogh JM, Dijkema LM, Ligtenberg JJ, Tulleken JE, Zijlstra JG.
Droogh JM, et al. Among authors: zijlstra jg.
Crit Care Med. 2008 Nov;36(11):3123-4. doi: 10.1097/CCM.0b013e31818be3d2.
Crit Care Med. 2008.
PMID: 18941331
No abstract available.