Significant improvement of patient safety by using direct punction technique for percutaneous endoscopic gastrostomy - Schumacher, L; Bojarski, C; Adler, A; Veltzke-Schlieker, W; Jürgensen, C; Wiedemann, B; Siegmund, B; Hornoff, S; Hartmann, D; Treese, C (Zeitschrift für Gastroenterologie, 2021)