Correction: Co-creating and hosting PxP: a conference about patient engagement in research for and by patient partners - Dawn P. Richards; Hetty Mulhall; Joletta Belton; Savia de Souza; Trudy Flynn; Alex Haagaard; Linda Hunter; Amy Price; Sara Riggare; Janice Tufte; Rosie Twomey; Karim M. Khan (Research Involvement and Engagement)