Figure 1
Flow diagram of study selection. IM intramuscular, IV intravenous, PCA patient-controlled analgesia, PCS prospective controlled study, RCT randomized controlled trial.
Figure 1 | Scientific Reports
Flow diagram of study selection. IM intramuscular, IV intravenous, PCA patient-controlled analgesia, PCS prospective controlled study, RCT randomized controlled trial.
