I agree to transfer the copyright of this article to the Korean Association of EMG Electrodiagnostic Medicine if it is published in the Journal of Electrodiagnosis and Neuromuscular Diseases.

I warrant that the article is original work that has not been published before and is not being considered for publication elsewhere in its final printed form or electronic form.

I certify that all authors contributed to this manuscript actually and intellectually and have responsibility to this manuscript.

I also declare that my institution has approved the protocol for any investigation involving human subjects or animals and that all experimentation was conducted in conformity with ethical and humane principles of research.

I further attest that we have disclosed any and all financial and other relationships that could be construed as a conflict of interest and that all funding sources supporting the work are disclosed in the manuscript.