bibliographic entry 321708 [be/321708]
https://w3id.org/oc/corpus/be/321708

is a

• bibliographic reference

content

• Gul, RB, Ali, PA. Clinical trials: the challenge of recruitment and retention of participants, J Clin Nurs, 2010, 19, 1–2, 227, 33, DOI: 10.1111/j.1365-2702.2009.03041.x, PMID: 20500260

references

• https://w3id.org/oc/corpus/br/567218