Body fat content To measure body fat content the investigators will use the tetrapolar Soft Tissue Analyzer® (STA, Akern, Florence, Italy), which can perform Bioelectrical impedance analysis (BIA). This technique measures the resistance in the body tissues when a 50 kilohertz (kHz) alternating current (AC) electrical current is given between four electrodes. Resistance can be measured by placing two electrodes on the dorsal hand and two on the foot at the unilateral side of the body. Extracellular water (ECW) as a percentage of total body water (TBW) and body cell mass (BCM) will be calculated independent of weight and height.