Cognitive–behaviour therapy for health anxiety in medical patients (CHAMP): a randomised controlled trial with outcomes to 5 years oleh Peter Tyrer, Paul Salkovskis, Helen Tyrer, Duolao Wang, Michael J Crawford, Simon Dupont, Sylvia Cooper, John Green, David Murphy, Georgina Smith, Sharandeep Bhogal, Shaeda Nourmand, Valentina Lazarevic, Gemma Loebenberg, Rachel Evered, Stephanie Kings, Antoinette McNulty, Yvonne Lisseman-Stones, Sharon McAllister, Kofi Kramo, Jessica Nagar, Steven Reid, Rahil Sanatinia, Katherine Whittamore, Gemma Walker, Aaron Philip, Hilary Warwick, Sarah Byford, Barbara Barrett