However, how the diagnosis was documented is unclear.
The answers were graded as Yes (with a score of one point) if the question was satisfactorily answered, otherwise with a score of zero points if information was missing (not documented) or unclear.
Given the limitations of etiologic diagnosis, the benefit of empirical antibiotics for occult bacterial pneumonia in patients with documented influenza is unclear.
Although exercise-induced increases in eNOS expression have been documented, it is unclear if exercise may also alter the functional coupling of eNOS.
While localized impacts have thus been documented, what remains unclear is whether such disturbances are manifested at larger scales in the form of alterations in watershed hydrology and downstream ecosystems.
Although relations of various parental psychological problems and family functioning with child development are well documented, it remains unclear whether specific prenatal or specific postnatal risk factors are independently associated with child emotional and behavioural problems, or whether observed associations can be explained by general parental psychopathology.
Despite its importance, little is known regarding the global genetic structure of this species; therefore, it is unclear whether documented variation in toxin production and outbreaks of ciguatera are the result of ecological triggers or the presence of different genetic strains across the geographic range of G. toxicus.
Why the California State Bar would attempt to deny homeowners legal representation in light of the well documented lender abuses is unclear.
While the deleterious effects of BBB breakdown are well documented, its origin remains unclear.
If any of this information could not be determined from study description, "unclear" was documented.
Although the pathological changes of CAV are well documented, its etiology remains unclear, and the intimate mechanisms underlying the development of this condition are not fully understood.
