Which of the following is not a cause of metabolic alkalosis?

Causes of Respiratory Acidosis: (pH ↓, CO2 ↑) Hypoventilation Pulmonary edema COPD Airway obstruction Neuromuscular diseases Causes of Metabolic Acidosis: (pH ↓, HCO3 ↓) Diabetic Ketoacidosis Salicylate overdose Diarrhoea Shock Sepsis Renal failure Causes of Respiratory Alkalosis: (pH ↑, CO2 ↓) High altitudes Pregnancy Hypoxia Fever Causes of Metabolic Alkalosis: (pH ↑, HCO3 ↑) Vomiting Excessive ingestion of alkali Cortisone excess