Guarantor

The scientific guarantor of this publication is Kazimierz Szopinski MD, PhD.

Conflict of interest

The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

Not required.

Ethical approval

Institutional Review Board approval was not required because it is a commentary.

Study subjects or cohorts overlap

None.

Methodology

• commentary