Interactions in clinical trials: Protocol and statistical analysis plan for an explorative study of four randomized ICU trials on use of pantoprazole, oxygenation targets, haloperidol and intravenous fluids. - Schjørring OL; Lange T; Krag M; Andersen-Ranberg NC; Meyhoff TS; Marker S; Klitgaard TL; Estrup S; Møller MH; Rasmussen BS; Poulsen LM; Perner A (Acta anaesthesiologica Scandinavica, 2022)