Sentence examples for frequently difficult to determine from inspiring English sources
After 1460 the two collaborated consistently, and the individual contributions of each are frequently difficult to determine.
It is therefore frequently difficult to determine the best therapeutic option for a given patient.
As reported for fallow deer [ 97], it is frequently difficult to determine who is the winner of the fight [[ 83], and our own observations].
Sampling approaches are often difficult to determine.
Physical access is often difficult to determine.
It may frequently be difficult to determine what this combination is, but only with some awareness of the full spectrum of potential causes of this resistance can educators select pedagogical approaches that might be appropriate for the needs of their particular audience, both in and outside the classroom.
In particular, the supplementary motor area (SMA) is frequently affected, making it difficult to determine the precise contribution of cingulate cortex disruption to the observed deficits.
Because of the low sequence similarity of the 9th exon, it was frequently difficult to directly determine its position in genomic DNA.
Without help from eBay, it is difficult to determine how frequently members of this circle bid or buy.
The date of onset, time before seeking medical help, and date of cure were frequently not documented and may be difficult to determine accurately.
23 35 Because AU is frequently comorbid with AS, it is difficult to determine whether the underlying AS or the anti-TNF treatment has caused the new-onset AU.
