Legend
Figure 1: Consolidated Standards of Reporting Trials (CONSORT) diagram of participants in the INHALE-HEP meta-trial
Table 1: Patient eligibility criteria for enrolment in studies contributing to the INHALE-HEP meta-trial
Table 2: Modified Ordinal Clinical Scale for COVID-19
Table 3: Presentation of Baseline Characteristics of the Patients
Appendix 1: Reporting checklist for a protocol, based on the SPIRIT guidelines
Appendix 2: Statistical analysis plan checklist