Persistent Hypoglycaemia and Pigmentary Mosaicism: A Case Report of BeckwithWiedemann Syndrome. - MURUGAIAH, KULANDAIVEL; BALU, GAUTHAMAN; MOHAN, HAMSAVAHINI; KALAIMANI, THAMBIPRABAGARANE; KRISHNAMOORTHY, PRADHAP (Journal of Clinical & Diagnostic Research, 2026)