Study	Reason for exclusion
Crabbe 1985	A study of treatment for cataracts in diabetes and galactosaemia; not a newborn screening study.
Knerr 2014	Study of the effects of temporary low‐dose galactose supplements in children of over 5 years with classical galactosaemia; not a newborn screening study.
Manis 1997	A study of treatment with oral uridine and cognitive functioning in people with classical galactosaemia; not a newborn screening study.
Panis 2006	A study of the effect of calcium, vitamins K1 and D3 on bone in galactosaemia; not a newborn screening study.
Schon 1976	A study of rapid fluorescence test (Weidemann) as mass screening procedure for galactosaemia in newborn infants in regard to sensitivity and specificity to a screening test; not relevant to our objectives.