PDSS2 and hyperinsulinemic hypoglycemia, familial, 4: Serine active site containing 1 (SERAC1), coenzyme Q deficiency (COQ1‐PDSS2), lactosylceramide α‐2,3 sialyltransferase (GM3 synthase; ST3GAL5), calcium‐independent phospholipase A2γ (PLA2G6)