obstacle to

Targeting the hypnozoite reservoir of Plasmodium vivax: the hidden obstacle to malaria elimination.
Lexical Ignorance: The Main Obstacle to Listening Comprehension with Advanced Foreign Language Learners.
Q-ball formation: Obstacle to Affleck-Dine baryogenesis in the gauge-mediated SUSY breaking ?
Nocturnal nest predation: a potential obstacle to recovery of a Florida Scrub‐Jay population
HIV-1 can be recovered from a variety of cells including peripheral blood monocytes of patients receiving highly active antiretrovir...
Access to adequate nutrition is a major potential obstacle to antiretroviral adherence among HIV-infected individuals in Rwanda.
A total fundoplication is not an obstacle to esophageal emptying after heller myotomy for achalasia: results of a long-term follow up
The invisible obstacle to educational equality: gender bias in textbooks
‘Obstacle to Medical Audit: British Doctors Speak Out’
The Humean obstacle to evidential arguments from suffering: On avoiding the evils of “appearance”