Sentence examples for frequently difficult to obtain from inspiring English sources

However, such data is frequently difficult to obtain.

Although precise information regarding the period of vaccination, the number of doses received, and the CD4 levels during the vaccination period was frequently difficult to obtain during interviews, the statistical association suggests that CD4 levels strongly influence vaccinal response to HBV.

In the first place, routine data (records, compilations and statistics within the health system) are often difficult to obtain; they are frequently kept by one individual and endless requests for authorization are required, even when ethics committees have given consent.

Diagnostic samples are most frequently obtained by fine needle biopsy and, therefore, adequate materials for genomic studies are often difficult to obtain.

However, representativeness is often difficult to obtain.

Women may not appear in court, and though they may be divorced via brief verbal declarations from their husbands, they frequently find it very difficult to obtain divorce themselves.

Unfortunately, operative reports are frequently not generated, unavailable or difficult to obtain for amputations performed on the battlefield or in Europe.

But take a closer look — the tastiest plum is often the most difficult to obtain.

But take a closer look — the tastiest plum is often the most difficult to obtain.

Often these are difficult to obtain where data or data collection is difficult.

Worse still, when reporters request visual materials, it is frequently delayed or forgotten or far to difficult to obtain (think FTP downloads, Box folders that fail to open, email attachments too big to come through).