Letter

Safety and efficacy assessment of allogeneic human dental pulp stem cells to treat patients with severe COVID-19: structured summary of a study protocol for a randomized controlled trial (Phase I / II).

Trials. 2020 Jun 12; 21 (1): 520.
Case Reports

Prone Position and Lung Ventilation/Perfusion Matching in Acute Respiratory Failure Due to COVID-19.

Am. J. Respir. Crit. Care Med. 2020 Jul 15; 202 (2): 278-279.
Article

Factors associated with death outcome in patients with severe coronavirus disease-19 (COVID-19): a case-control study.

Int J Med Sci. 2020 Jan 1; 17 (9): 128112921281-1292.