Hawkley, Louise C; Cacioppo, John T (2003). «Loneliness and pathways to disease». Brain, Behavior, and Immunity. 17 (1): 98–105. doi:10.1016/S0889-1591(02)00073-9. PMID12615193.
nih.gov
pubmed.ncbi.nlm.nih.gov
Hawkley, Louise C; Cacioppo, John T (2003). «Loneliness and pathways to disease». Brain, Behavior, and Immunity. 17 (1): 98–105. doi:10.1016/S0889-1591(02)00073-9. PMID12615193.