BMJ Author Support How to choose a journal Topic Collections Submitting to a Topic Collection See our calls for papers for Topic Collections See our published Topic Collections Become a Guest Editor Reporting guidelines Patient and public partnership Study protocols Scientific misconduct Trial registration Authorship and contributorship Research Ethics Patient consent and confidentiality Competing interests From research to publication Language editing services Writing for online visibility BMJ Author Support How to choose a journal Topic Collections Submitting to a Topic Collection See our calls for papers for Topic Collections See our published Topic Collections Become a Guest Editor Reporting guidelines Patient and public partnership Study protocols Scientific misconduct Trial registration Authorship and contributorship Research Ethics Patient consent and confidentiality Competing interests From research to publication Language editing services Writing for online visibility Before you submit Before you submit In this section:BMJ Author Support How to choose a journal Topic Collections Submitting to a Topic Collection See our calls for papers for Topic Collections See our published Topic Collections Become a Guest Editor Reporting guidelines Patient and public partnership Study protocols Scientific misconduct Trial registration Authorship and contributorship Research Ethics Patient consent and confidentiality Competing interests From research to publication Language editing services Writing for online visibility See our calls for papers for Topic Collections Calls for papers for Topic Collections have moved. In this section:BMJ Author Support How to choose a journal Topic Collections Submitting to a Topic Collection See our calls for papers for Topic Collections See our published Topic Collections Become a Guest Editor Reporting guidelines Patient and public partnership Study protocols Scientific misconduct Trial registration Authorship and contributorship Research Ethics Patient consent and confidentiality Competing interests From research to publication Language editing services Writing for online visibility