“…No additional references were found by hand searching included studies. The methods used for eliciting valuations were direct (8 studies), 35,36,41–50 indirect (16 studies), 36,43,47,49,51–67 or a combination of both (5 studies). 36,43,47,49,62 The most frequently used indirect measurement instruments were the EQ-5D (13 studies), 49,53–56,60–67 the PORPUS (7 studies), 36,43,49,51,52,58,59 followed by the HUI2/3 (3 studies), 47,49,58 the QWB (3 studies), 43,49,57 the 15D (2 studies), 54,…”