Intended for healthcare professionals

Letters Covid-19 vaccine trial protocols released

Covid-19 vaccine: we are sleepwalking into a massive prospective cohort study

BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4568 (Published 24 November 2020) Cite this as: BMJ 2020;371:m4568

Article usage

Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.

Usage statistics: November 2020 to May 2022

Rendering graph...
AbstractFullPdf
Nov 2020121214253
Dec 20204873629112
Jan 2021628028650
Feb 2021474112032
Mar 202128078422
Apr 202116504819
May 202113005010
Jun 2021843295
Jul 20216002313
Aug 2021674238
Sep 2021447247
Oct 2021324114
Nov 2021358191
Dec 2021359205
Jan 2022230171
Feb 20226730
Mar 20229820
Apr 20225852
May 20223210
Total269531536344