Short-term impact of a stress management and health promotion program on perceived stress, parental stress, health locus of control, and cortisol levels in parents of children and adolescents with diabetes type 1: a pilot randomized controlled trial - Tsiouli, Eleni; Pavlopoulos, Vassilis; Alexopoulos, Evangelos C; Chrousos, George; Darviri, Christina (Explore: The Journal of Science and Healing, 2014)