Article History
Received: 27 February 2020
Accepted: 10 May 2020
First Online: 15 May 2020
Ethics approval and consent to participate
: As our paper is just a letter to the editor that comments a article published in journal, both ethics approval and consent are unnecessary.
: All authors agree to the contents of the submitted manuscript and acknowledge familiarity with the journal’s instructions for manuscript submission.
: The authors declare that they have no competing interests.