Sentence examples similar to was believed to be problematic from inspiring English sources

Intravenous delivery has been believed to be problematic; researchers had been concerned that antibodies in the blood would neutralize the reovirus before it could reach the tumor.

At that time, crack cocaine was believed to be more problematic and dangerous than powder.

Requirements related to licensing and regulation submittals for US commercial nuclear reactors were originally based on what was believed to be the most problematic accident scenarios, conservative safety limits and prescribed analysis methods.

The most problematic question was believed to be the EU bailout policy, where the True Finns most differ from the other parties.

Sleep maintenance difficulties (or unwanted awakenings during the night) are frequently believed to be problematic for older individuals.

Motivation is believed to hold the key to overcoming this problematic gap (7).

Undeniably, it's going to be problematic".

This view is perceived to be problematic.

Rubio's lieutenants proved to be problematic.

They turn out to be problematic.

However, due to the nature of the sampling process, it is believed that a violation of this assumption is less problematic than the first-order Markov assumption.