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Zwahlen, Marcel; Low, Nicola; Borisch, Bettina; Egger, Matthias; Künzli, Nino; Obrist, Reto; Paccaud, Fred; Zybach, Ursula; Probst-Hensch, Nicole M (2010). Population based screening - the difficulty of how to do more good than harm and how to achieve it. Swiss medical weekly, 140, w13061. Muttenz: EMH Schweizerischer Ärzteverlag 10.4414/smw.2010.13061