1. National comprehensive cancer network (NCCN): Standards of care and management of distress penal. Distress management version 1.2007. [Accessed on 2nd October 2006], [ http://www.nccn.org/professionals/physician_gls/PDF/distress.pdf ]
2. Sarita GP: Impact of chemotherapy on distress and quality of life of cancer patients. Dissertation submitted to university of Kerala, Trivandrum, India. 2004
3. Thomas BC: Modelling distress in cancer patients: A psycho-futuristic approach. Dissertation submitted for PhD (Futurs study). 2005, University of Kerala, Thiruvananthapuram
4. Thomas BC, Devi N, Sarita GP, Rita K, Ramdas K, Hussain BM, Rajnish KR, Pandey M: Reliability and Cross-cultural Validity of the Malayalam Hospital Anxiety and Depression Scale (HADS). Indian Journal of Medical Research. 2005, 122: 395-9.
5. Keller U, Henrich G: Illness related distress; Does it mean the same for man and women? Gender aspects in cancer patients distress and adjustment. Acta Oncol. 1999, 38: 747-755. 10.1080/028418699432905.