Fig. 1From: Following the science? Comparison of methodological and reporting quality of covid-19 and other research from the first wave of the pandemicPRISMA flow diagram describing search strategy and inclusion. Flow diagram illustrating literature search and results. NB The Lancet published two data modelling covid-19 research papers in February 2020; these did not meet our definition of clinical research and so first paper included was MarchBack to article page