Medline	Scopus
“Early HTA” OR “Early Health Technology Assessment”	18	16
“Health Technology Assessment” AND “R&D”	22	20
“Health Technology Assessment” AND “product development”	9	19
“Early Modelling” AND “R&D”	0	1
“Early Modelling” AND “HTA”	0	0
“Early Modelling” AND “product development”	0	1
“HTA” AND “Commercialization”	2	2
“HTA” AND “Product development”	6	14
“HTA” AND “R&D”	19	28
“Headroom” AND “product development”	1	9
“Headroom” AND “R&D”	0	0
“Markov model” AND “product development”	0	14
“Markov model” AND “R&D”	12	11
“Patient preference” AND “product development”	2	16
“Patient preference” AND “R&D”	5	3
“Multi-criteria” AND “R&D”	1	69
“Multi-criteria” AND “product development”	0	170
# Unique peer-reviewed papers	65	199
# of unique peer-reviewed papers (2013–2017)	36	134
# Unique peer-reviewed (2013–2017)	148