Table 1 Search strategy

((((Epilepsy AND Progressive AND (Myoclonic OR Myoclonus)) AND (2[All Fields])) OR (EPM2A OR EPM2B OR NHLRC1)) OR ("Lafora Disease"[Mesh])) OR (Lafora)

#1: 'myoclonus epilepsy'/exp

#2: lafora:ti,ab,kw

#3: (epilepsy NEAR/2 myoclonic NEAR/2 progressive):ti,ab,kw

#4: (epilepsy NEAR/2 myoclonus NEAR/2 progressive):ti,ab,kw

#5: #2 OR #3 OR #4

#6: 2:ti,ab,kw OR 'type 2':ti,ab,kw OR type2:ti,ab,kw

#7: #5 AND #6

#8: epm2a:ti,ab,kw OR epm2b:ti,ab,kw OR nhlrc:ti,ab,kw

#9: #1 OR #7 OR #8