More detailed studies of environmental impacts should be undertaken.

More in-depth studies would be required to explore in detail the dependence potential of this drug.

But after further investigations, this possibility was ruled out.

Wouldn't it be better to start very concrete researches?

Hopefully further study on the skeletal remains will give us more information.

Further research is required to assess the physiological impact.

More recent work seemed to suggest that such interpretations of

These are real phenomena which deserve further study.

However, I’d personally like to see some larger studies on this.

A longer follow-up study in this cohort is ongoing.

There have been encouraging effects in studies up to now, and bigger studies are presently being done.

These are groups that would merit in-depth study in the future.

The method should identify chemicals with neurotoxic potential, which may warrant further indepth investigation of this aspect.

That understanding has changed in recent times thanks to more in-depth research.

Further study is required to evaluate the modes of transmission.