Sentence examples for it remains difficult to specify from inspiring English sources

Also, few studies have been conducted in developing countries [ 11- 14]; thus, it remains difficult to specify determinants for CS in SSA and to propose a CS classification that facilitates international and local comparisons.

Rather, it is a thing in itself, whose meaning is right there on its surface but remains difficult to specify.

Currently it remains difficult to determine which patients will benefit most from MEK inhibitor treatment.

Therefore, it remains difficult to determine any genetic heterogeneity among these isolates.

Unfortunately, it remains difficult to determine the mechanisms by which composite DECM/PCL scaffolds affect osteogenesis.

At this point, it remains difficult to determine which of these possibilities is more likely.

It remains difficult to track sales of taxi-screen advertising.

It remains difficult to be sure what to make of these matches.

It remains difficult to predict their future".

However it remains difficult to assess objectively.

But it remains difficult to prove and difficult to counteract.