1. Guasco G, La Mantia A, Cuniolo A. Psychological problems of thalassemic subjects.Pediatr Med Chir 1987 May–Jun; 9(3): 269–279.
2. Olsson CA, Bond L, Johnson MW, Forer DL, Boyce MF, Sawyer SM. Adolescent chronic illness: a qualitative study of psychosocial adjustment.Ann Acad Med Singapore 2003 Jan;32(1): 43–50.
3. Huurre TM, Aro HM. Long-term psychosocial effects of persistent chronic illness. A follow-up study of Finnish adolescents aged 16 to 32 years.Eur Child Adolesc Psychiatry 2002 Apr; 11(2): 85–91.
4. Meijer SA, Sinnema G, Bijstra JO, Mellenbergh GJ, Wolters WH. Coping styles and locus of control as predictors for psychological adjustment of adolescents with a chronic illness.Soc Sci Med 2002 May; 54(9): 1453–1461.
5. Crown, S, Crisp AH. A short clinical diagnostic self rating scale for psychoneurotic patients-the M.H.. Q. Brit. jnl of Psc, 1961; 112: 917.