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. Author manuscript; available in PMC: 2023 Mar 8.
Published in final edited form as: Obstet Gynecol. 2022 Jul 6;140(2):195–203. doi: 10.1097/AOG.0000000000004847

Fig. 1.

Fig. 1.

Flow chart. COVID-19, coronavirus disease 2019.

Valsecchi. High-Dose Nitric Oxide in Severe COVID-19. Obstet Gynecol 2022.