Related by context. Frequent words. (Click for all words.) 73 durations 59 Duration 53 lasts 51 length 47 Length 47 shortened 44 extended 44 periods 44 shorter 43 prolonged 42 during 42 intervals 42 lifespan 42 shortening 42 lasted 41 shorten 41 lengthen 41 prolongation 41 preceding 40 timeframe 40 short 40 period 40 timespan 39 periodicity 39 scope 39 severity 39 #hours [002] 39 frequency 38 shortens 38 lengthens 37 term 37 longer 37 indeterminate 37 subsequent 37 specified 37 prolong 37 varies depending 36 minimum 36 lengthened 36 timeframes 36 maximum 36 continuous 36 lengthening 36 remainder 36 varying lengths 35 onset 35 prolongs 35 concurrent 35 depending 35 span 35 elapses 35 lasting 35 timings 35 incubation period 35 long 35 shortest 35 prolonging 34 maximal 34 symptom onset 34 Approximate 34 Subjects 34 varies 34 participants 34 stipulated 34 longest 34 approximated 34 Shortening 34 Extended 34 postoperative 34 #days [001] 34 ≤ 34 indefinite 33 extent 33 prior 33 lengthier 33 Maximum 33 immobility 33 cycles 33 extend 33 vary depending 33 parameters 33 timescale 33 stays 33 placebo controlled 33 timescales 33 focal length 33 hours 33 Severity 33 lifespans 33 uninterrupted 33 dyspnea 33 intermittent 32 extending 32 to# [001] 32 encompassed 32 #hrs [002] 32 primary efficacy endpoint 32 allowable 32 expiry 32 diurnal 32 Prolonged