Received: 10 December 2019
Accepted: 21 September 2020
First Online: 25 September 2020
Ethics approval and consent to participate
: Because the records of patients have been anonymized and de-identified, no informed consent was required. Ethical approval was obtained from the Institutional Review Board of Cardinal Tien hospital (No. CTH 108–3–5-013).
: Not applicable.
: The authors declare that they have no competing interest.