MSI2 and neuroblastoma: Overexpression of PRKCQ‐AS1 or MSI2 enhances BMX expression, ERK protein phosphorylation and neuroblastoma cell proliferation; MSI2 or BMX knockdown blocks the effects of PRKCQ‐AS1 overexpression; and PRKCQ‐AS1 or BMX knockdown blocks the effects of MSI2 overexpression.