Psychological intervention improves quality of life in patients with early-stage cancer: a systematic review and meta-analysis of randomized clinical trials oleh Sára Anna Bognár, Brigitta Teutsch, Stefania Bunduc, Dániel Sándor Veres, Bence Szabó, Beatrix Fogarasi, Olga Júlia Zahariev, Nóra Vörhendi, Omer Almog, Yael Hadani, Dorottya Gergő, Emese Mihály, Bálint Erőss, Stefania Bunduc, Katalin Márta, Péter Hegyi