Title {1}	Negative pressure wound therapy versus usual care for Surgical Wounds Healing by Secondary Intention (SWHSI-2 Trial): study protocol for a pragmatic, multicentre, cross surgical specialty, randomised controlled trial
Trial registration {2a and 2b}.	ISRCTN Registration Number: 26277546 Prospectively registered on 25.03.2019 Recruitment Infographic SWAT - MRC Hub for Trials Methodology Research SWAT repository #116 Registered 13.04.2020 Retention Thank You Card SWAT - MRC Hub for Trials Methodology Research SWAT repository #119 Registered 13.04.2020
Protocol version {3}	v1.4 31.07.2020
Funding {4}	This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment Programme (Project Reference: 17/42/94). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care.
Author details {5a}	The SWHSI-2 Trial Investigators+ + See Declarations Section for full list of SWHSI-2 Trial Investigators
Name and contact information for the trial sponsor {5b}	Hull University Teaching Hospitals NHS Trust Office 14, 2nd Floor Daisy Building, Castle Hill Hospital, Hull HU16 5JQ
Role of sponsor {5c}	Study sponsor and funder have had no role in study design nor in the collection, management, analysis or interpretation of data. They will have no role in the writing of associated publications and the decision to submit papers for publication.