- Role of Methotrexate in Rheumatoid Arthritis and comparing its efficacy with other disease modifying Anti-Rheumatic drugs – Sulfasalazine and Chloroquine. (1997–2000). Opportunistic infections in HIV positive patients. (2000–2003).
- A comparative study between Ultrasound and Conventional Radiography in detecting early bone erosions in patients with Rheumatoid Arthritis. (2001-2004).
- Comparative value of Anti-CCP vs Rheumatoid factor (IgM type) in patients of Rheumatoid arthritis in adults. (2004-2007).
- Colour Doppler analysis of lower limb vessels of patients with type 2 diabetes mellitus. (2006-2009).
- Effect of Methotrexate in Rheumatoid Arthritis patients. (2007-2010).
- Protocol for HIV study: Participated in a meeting on to finalise a protocol for a study on ‘Clinical evaluation of plants of anti HIV / AIDS activity’ to be conducted by Indian Council of Medical Research. This was held under the auspices of Delhi Society of Promotion of Rational Use of Drugs. Jun 2001.