MMP9 and obesity due to melanocortin 4 receptor deficiency: Descriptive statistics of all study participant serum samples tested for Bone Panel (osteoprotegrin (OPG), leptin, parathyroid hormone (PTH) and insulin), Matrix Metalloproteinase Panel (MMP-2, MMP-8, MMP-9) and Obesity Panel (adiponectin and C-reactive protein (CRP)).