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Figure 2: The distribution at presentation according to MGFA classification. MGFA Grade 1: ocular MG, MGFA Grade IIa: mild generalized MG, predominant limb or axial muscles involvement MGFA Grade IIb: mild generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade IIIa: moderate generalized MG, predominant limb or axial muscles involvement, MGFA Grade IIIb: moderate generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade IVa: severe generalized MG, predominant limb or axial muscles involvement, MGFA Grade IVb: severe generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade V: MG cases requiring intubation

Figure 2: The distribution at presentation according to MGFA classification. MGFA Grade 1: ocular MG, MGFA Grade IIa: mild generalized MG, predominant limb or axial muscles involvement MGFA Grade IIb: mild generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade IIIa: moderate generalized MG, predominant limb or axial muscles involvement, MGFA Grade IIIb: moderate generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade IVa: severe generalized MG, predominant limb or axial muscles involvement, MGFA Grade IVb: severe generalized MG, predominant bulbar or respiratory muscles involvement, MGFA Grade V: MG cases requiring intubation