Database or resource	Date last searched	Strategy
Cochrane Central Register of Controlled Trials (CENTRAL)	11 October 2017	#1 MeSH descriptor: [Galactosemias] #2 MeSH descriptor: [Neonatal Screening] #3 MeSH descriptor: [Mass Screening] explode all trees #4 (newborn or neonatal or mass or universal or communit*) near/3 screen* #5 (galactose or galactose 1‐ phosphate or Galactose‐1‐phosphate uridyl transferase or Galactose‐1‐phosphate uridyl transferase deficiency or galactosemia* or galactosaemia*) #6 #1 or #5 #7 #2 or #3 or #4 #8 #6 and #7
PubMed (1946 onwards)	11 October 2017	#1 randomized controlled trial [pt] #2 controlled clinical trial [pt] #3 randomized [tiab] #4 placebo [tiab] #5 drug therapy [sh] #6 randomly [tiab] #7 trial [tiab] #8 groups [tiab] #9 #1 OR #2 OR # 3 OR #4 OR #5 OR #6 OR #7 OR #8 #10 (animals [mh] NOT humans [mh]) #11 #9 NOT #10 #12 "Galactosemias"[Mesh:NoExp] #13 "Neonatal Screening"[Mesh:NoExp] #14 Mass Screening"[Mesh] #15 (newborn OR neonatal OR mass OR universal OR communit*) AND screen* #16 galactose OR galactose 1‐ phosphate OR Galactose‐1‐phosphate uridyl transferase OR Galactose‐1‐phosphate uridyl transferase deficiency OR galactosemia* OR galactosaemia* #17 #12 OR #16 #18 #13 OR #14 OR #15 #19 #11 AND #17 AND #18 Lines #1 ‐ #11 are the Cochrane Highly Sensitive Search Strategy for identifying randomized trials in MEDLINE: sensitivity‐maximizing version (2008 revision); PubMed format
Clinicaltrials.gov	11 October 2017	galactosemia OR galactosaemia
WHO ICTRP	11 October 2017	galactosemia OR galactosaemia
Graylit.org	11 October 2017	galactosemia OR galactosaemia
Opengray.eu	11 October 2017	galactosemia OR galactosaemia