Melzack, 1975, Pain, 1, 277, 10.1016/0304-3959(75)90044-5
Fernandez, 1992, Psychol Bull, 112, 205, 10.1037/0033-2909.112.2.205
Reading, 1982, Br J Clin Psychol, 21, 339, 10.1111/j.2044-8260.1982.tb00571.x
Wilkie, 1990, Nurs Res, 39, 36, 10.1097/00006199-199001000-00008
Fernandez, 1996, Pain, 66, 31, 10.1016/0304-3959(96)02992-2
Melzack, 1971, Anesthesiology, 34, 50, 10.1097/00000542-197101000-00017