Sentence examples for still difficult to establish from inspiring English sources

There has been a continuous improvement in the methods to detect iron deficiency, a common condition in children, in the last decades or so, but it is still difficult to establish which parameters should be included in a diagnostic panel for iron deficiency and iron deficiency anaemia.

The effects of virus infection remain complex and causal relationships are still difficult to establish.

The real magnitude of the epidemic is still difficult to establish because sporotrichosis is not an obligatorily reported disease.

In spite of the great improvements in the study of the physiological role of WFS1, it is still difficult to establish a phenotype-genotype correlation (9).

The association between these satisfaction dimensions and HRQoL one year after surgery suggests that health care professional support (real or perceived) is an important determinant of HRQoL after THR or TKR, but a causal relation is still difficult to establish.

Even though stimulation with microbial CpG-DNA can induce anti-dsDNA antibodies in animal models of lupus [ 79, 80], and TLR9-deficient lupus mice fail to produce anti-chromatin (dsDNA) antibodies [ 81], it is still difficult to establish a direct link between exposure to microbial CpG-DNA and induction of lupus.

Therefore, it was and still is difficult to establish standards for the experimental procedure and processing of the raw data obtained [ 30].

Still, it was difficult to establish a breed, and only careful control of bloodlines could maintain one.

Still, it remains difficult to establish this standard of evidence in the literature.

However, breastfeeding is difficult to establish for very preterm neonates.

"There is little regulation or copyright laws, no royalties for artists and piracy is still a large problem, making it difficult to establish and sustain a formal music industry," says Ms Himian.