[1] Univ Hosp, Dept Gynecol & Obstet, Charite, Campus Virchow Clin, Berlin, Germany
[2] Univ Hosp, Charite Campus Benjamin Franklin, Dept Cardiol & Pneumol, Berlin, Germany
[3] Univ Hosp, Charite, Forsch Grp Geriatr, Berlin, Germany
[4] Univ Hosp, Dept Gen Visceral & Transplantat Surg, Charite Campus Virchow Clin, Berlin, Germany