Fidahic, Mahir
Nujic, Danijela
Civljak, Marta
Runjic, Renata
Markotic, Filipa
Vidak, Marin
Puljak, Livia http://orcid.org/0000-0002-8467-6061
Article History
Received: 17 October 2021
Accepted: 31 May 2022
First Online: 17 June 2022
Declarations
:
: This was a methodological study that analyzed trial registries and publications. Thus, no ethics approval was required for the study.
: Since December 15, 2021, Filipa Markotic has been employed by Teva Croatia, but she does not work in the field of interventions for COVID-19, and thus she has no conflicts of interest with the work presented in the manuscript. Livia Puljak is a Senior Editorial Board member of the BMC Medical Research Methodology, but she was not involved in any way in handling of this manuscript. Other authors have no competing interests to declare.