1 Sana-Klinikum Offenbach, Clinic for Surgery of Obesity and Metabolic Disorders, Starkenburgring 66, Offenbach am Main, 63069, Germany. profweiner@gmail.com.
2 Sana-Klinikum Offenbach, Clinic for Surgery of Obesity and Metabolic Disorders, Starkenburgring 66, Offenbach am Main, 63069, Germany.