Lack of insurance coverage is a major barrier to effective use of nicotine replacements.
But recording every stop is an unnecessary barrier to effective policing.
For those who have been diagnosed it remains a barrier to effective treatment.
Ego can be a barrier to effective partnerships: There are barriers and these can be tricky to overcome.
But yet another significant barrier to effective obstetrical medical care remains: darkness.
During El Niño, however, the thicker surface layer acts as a barrier to effective upwelling by the coastal winds.
Together, the proof of dominant market share and the existence of a substantial barrier to effective entry create the presumption that Microsoft enjoys monopoly power.
His body language could have been a barrier to effective communication with listeners, but his highly expressive singing won over an attentive audience.
(No, don't go to sleep!) The major barrier to effective action is the combination of the default sixty-vote requirement in the Senate and an extreme obstructionist minority.
Despite advances in HIV medicine, adherence presents as a barrier to effective treatment for youth.
For many, the relatively high likelihood of experiencing triptan sensations is a barrier to effective parenteral migraine-specific therapy.
