Methodological Challenges in Online Trials

Elizabeth Murray   ^† , PhD FRCGP ;   Zarnie Khadjesari   ^† , MSc ;   Ian White   ^† , MSc ;   Eleftheria Kalaitzaki   ^† , MSc ;   Christine Godfrey   ^† , BA(Hons) ;   Jim McCambridge   ^† , PhD ;   Simon Thompson   ^† , PhD ;   Paul Wallace   ^† , FRCGP FFPHM