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Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Joeri K Tijdink conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Yvo M Smulders conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Lex M Bouter conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Medical ethics review committee of VU University Medical Center

Data Deposition

The following information was supplied regarding data availability:

For ethical reasons to maintain confidentiality

Funding

The authors received no funding for this work


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I looked for this paper in the references but did not see it.

i've always liked it: Handwerker HO. Impact factor blues. Eur J Pain. 2010 Jan;14(1):3-4. doi:

10.1016/j.ejpain.2009.11.003. PubMed PMID: 20123449.

From page 1:

"Over the years several articles have analyzed the weaknesses of

this bibliometric measure (Moed and Van Leeuwen, 1996; Seglen,

1997; Frank, 2002) but these an...

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