The drug compliance among patients with diabetes in Sri Lankan settings. Gunathilake G , Kottahachchi D, Siyambalapitiya S. Sri Lanka Journal of Diabetes, Endocrinology and Metabolism 2017;7 (1):16-20.

The technique of measuring height in patients with Oasteoporosis. Kottahachchi DC , Gao F , Topliss DJ , Sztal-Mazer S . Sri Lanka Journal of Diabetes, Endocrinology and Metabolism 2017;7 (1):13-16.

Noel Somasundaram, Dr, Henry Rajaratnam, Chandrika Wijeyarathne, Prasad Katulanda, Uditha Bulugahapitiya, Sajith Siyambalapitiya, Charles Antonypillai et al. "Cushing syndrome"Sri Lanka Journal of Diabetes, Endocrinology and Metabolism (2014); 1: 1-12

Kottahachchi D C, Dr. Noel Somasundaram, Dr. Henry Rajaratnam, Prof. Chandrika Wijeyarathne, Dr. Prasad Katulanda,Dr. Uditha Bulugahapitiya, Dr. Sajith Siyambalapitiya, Dr. Charles Antonypillai,et al "Management of obesity "Sri Lanka Journal of Diabetes, Endocrinology and Metabolism (2014); 1: 55-70.

Kottahachchi D C ,Noel Somasundaram, Prof, Chandrika Wijeyarathne, Henry Rajaratnam, Prasad Katulanda, Uditha Bulugahapitiya, Sajith Siyambalapitiya, Charles Antonypillai et al. "Sodium Disorders: Hyponatraemia."Sri Lanka Journal of Diabetes, Endocrinology and Metabolism 2013; 3: 114-122

D. C. Kottahachchi,S Siyambalapitiya,U Bulugahapitiya. "Update on endocrine complications in thalassaemia"SJDEM: 30. 57, no. 3 (2012): 128-129.

Kottahachchi, D. C., B. L. P. P. Balasooriya, L. Panangala, and U. K. Ranawaka. "Two siblings with cerebrotendinous xanthomatosis."Ceylon Medical Journal 57, no. 3 (2012): 128-129.

De Silva, Arjuna P., Lakmali Amarasiri, Manohari N. Liyanage, Dulani Kottachchi, Anuradha S. Dassanayake, and H. Janaka De Silva. "One-hour fast for water and six-hour fast for solids prior to endoscopy provides good endoscopic vision and results in minimum patient discomfort."Journal of gastroenterology and hepatology no. 6,24(2009): 1095-1097.

Gunathilake G, Kottahachchi D, Siyambalapitiya S."Drug compliance among patients with diabetes in Sri Lankan setting." 5thAnnual Endocrine Society Sessions 2013

"Orbitopathy patient with a relapse responding to combined systemic steroids and Orbital Radiotherapy: a case report."2nd SAFES (South Asian Federation of Endocrine Societies) –April 2015- Severe active Graves’

128 th Annual Academic Sessions, Sri Lanka Medical Association July 2015.Prevalence and risk factors for metabolic syndrome among aging adults in an urban Sri Lankan population.Kasturiratne, K.T.A.A.; Niriella, M.A.; de Silva, S.T.; Perera, K.R.; Subasinghe, S.K.C.E.; Kodisinghe, S.K.; Piyaratna, T.A.C.L.; Vithiya, K.; Kottachchi, D.; Ranawaka, U.K.; Jayasinghe, C.; Rajindrajith, S.; Dassanayake, A.S.; de Silva, A.P.; Pathmeswaran, A.; de Silva, H.J. 

129^thSri Lanka Medical Association (SLMA)  Annual Academic Session July 2016.Anthropometric correlates of total body fat, visceral adiposity and cardio-metabolic health risk: a community cohort study of urban, adult Sri Lankans.Niriella MA, De Silva ST, Kasturiratna A, Kottahachchi D, Ranawaka UK, Dassanayaka AS, De Silva AP, Pathmeswaran A, de Silva HJ.

10 ^th Anniversary conference -Academy for sickle cell and Thalassaemia (ASCAT) 5-7 October 2016.Prevalence of endocrine complications and their associatiob with iron overload among Thalassaemia patients in a specialized Thalassaemia centre.Kottahachchi DC,Swarnasri ST,Siyambalapitiya S,Premawardhena AP.

130^thSri Lanka Medical Association (SLMA)  Annual Academic Session July 2017.Incidence ,prevalence and demographic and life style risk factors for obesity among urban,adult Sri Lankans: a community cohort follow up study. Niriella MA, De Silva ST, Kasturiratna A, Kottahachchi D, Ranasinghe RMAG, Dassanayaka AS, De Silva AP, Pathmeswaran A, Wickramasinghe AR, Kato N, de Silva HJ.CMJ 2017 ;62 (1):58.