Study registration: *
Publication Ranzani O, medRxiv, 2021
Dates: 2021-01-17 to 2021-04-29
Funding: Public/non profit (Pan American Health Organization; Sao Paulo State; Oswaldo Cruz Foundation; Instituto de Salud Carlos III; Spanish Ministry of Science and Innovation through the Centro de Excelencia Severo Ochoa; Generalitat de Catalunya through the CERCA Program.)
Conflict of interest: no COI (The authors have declared no competing interest; no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous three years; no other relationships or activities that could appear to have influenced the submitted work.)