A unified approach to loneliness. Issue 10218 (11th January 2020) - Fried, Linda; Prohaska, Thomas; Burholt, Vanessa; Burns, Annette; Golden, Jeannette; Hawkley, Louise; Lawlor, Brian; Leavey, Gerard; Lubben, Jim; O'Sullivan, Roger; Perissinotto, Carla; van Tilburg, Theo; et al.