Contributors
PTSD
AE and DMC wrote the grant application, with statistical input from RP-S and health economics input from AT. AE wrote the protocol and ethics application, was the chief investigator and supervised the study and iCT-PTSD supervision group to ensure treatment fidelity. ETB wrote the statistical analysis plan with input from senior statisticians at the Primary Care Clinical Trials Unit at the University of Oxford and Prof Kerry Hood at the Centre for Trials Research at Cardiff University. AE, JW, EW-P, NG, HM, AK and DMC developed iCT-PTSD, GA developed iStress with his team, HM adapted iStress for PTSD and wrote additional modules, and AR provided supervision for iStress to ensure treatment fidelity. GT and MJ performed the statistical analyses and drafted the statistical methods and results sections, tables, and figures. All authors provided critical revisions and approved the final version of the paper. JW, HM, and AE accessed and verified the data. All authors had full access to the data in the study and had final responsibility for the decision to submit the paper for publication.Face-to-face CT-PTSD and iCT-PTSD were developed by AE and DMC's team. AE, NG, JW, EW-P, HM, and DMC occasionally give paid workshops on CT-PTSD. iStress was developed by GA's team. All other authors declare no competing interests.