Question:  Narinder Kumar Mehra is the founding head of the department of transplant immunology and immunogenetics at a college established in what year?

Context paragraphs:
Yeh Zindagi Kitni Haseen Hai: Yeh Zindagi Kitni Haseen Hai (This Life Is Beautiful) is a 1966 Hindi romantic drama film directed by R. K. Nayyar.  The film was produced by Nayyar fr his R. K. Nayyar Films banner.  It had story and screenplay by Harish Kumar Mehra with dialogues by Agha Jani Kashmiri.  The music was composed by Ravi with lyrics written by Rajendra Krishan.

Narinder Kumar Mehra: Narinder Kumar Mehra (born 4 November 1949) is an Indian immunologist, professor and the founding head of the department of transplant immunology and immunogenetics of the All India Institute of Medical Sciences, Delhi.  He is a former dean of research and holds the ICMR Dr. C.G. Pandit National Chair at AIIMS.  An elected fellow of the International Medical Sciences Academy, The World Academy of Sciences, Indian National Science Academy and National Academy of Sciences, India, Mehra is known for his research on histocompatibility and immunogenetics.  The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards for his contributions to Medical Sciences in 1992.  He received the Chevalier of the National Order of Merit from François Mitterrand in 2003.

Sunil Kumar Ahuja: Sunil Kumar Ahuja, M.D. (born March 13, 1961) is a professor of Medicine, Microbiology, Immunology & Biochemistry at the University of Texas Health Science Center at San Antonio and an expert on the role of immunogenetics on HIV pathogenesis.  Dr. Ahuja is also the Director of the Veterans Administration Research Center for AIDS and HIV-1 Infection.  His most recent work, first published in the 2005 issue of Science, involves the ethnic group-specific role of CCR5 haplotype and CCL3L1 gene copy number on the progression of HIV to AIDS.

Surinder Mehra: Air Chief Marshal Surinder Kumar Mehra (15 November 1932 – 8 December 2003), PVSM, AVSM, VM, was the Chief of Air Staff of Indian Air Force from 1 August 1988 until 31 July 1991.  He was born in Delhi.

Raj Kumar Mehra: Raj Kumar Mehra (16 April 1918 – 5 January 2001) was an Indian cyclist.  He competed at the 1948 Olympics and the 1952 Olympics.  At the 1951 Asian Games he won the silver medal in the team pursuit.

Narinder Kumar Gupta: Narinder Kumar Gupta (born 22 August 1942 in Mirpur, Jammu and Kashmir, India, (now in PoK)), also known as N. K. Gupta is Professor of Mechanics at the Indian Institute of Technology in Delhi.  Gupta works in the area of large deformations of metals and composites at low, medium and high rates of loading.  His researches stimulate the development of constitutive behaviour of materials, understanding of the basic mechanics of large deformation, design for crashworthiness of road and air vehicles, design for safety in defence applications and in design of metal forming processes.

All India Institute of Medical Sciences, Delhi: All India Institute of Medical Sciences Delhi (AIIMS Delhi; IAST: "Akhil Bhāratiya Āyurvignan Samsthān Dillī") is a medical college and medical research public university based in New Delhi, India.  The Institute was established in 1956 and operates autonomously under the Ministry of Health and Family Welfare.

Fritz Bach: Fritz Heinz Bach (5 April 1934 – 14 August 2011) was an American transplant physician and immunobiologist.  He was considered one of the pioneers in the field of transplant immunology.

J. Richard Batchelor: John Richard Batchelor FRCPath, FRCP (1931-2015), known as Richard, was a British immunologist, specialising in transplant immunology.

Peter Alfred Gorer: Peter Alfred Gorer FRS (14 April 1907 (London)–1961) was a British immunologist, pathologist and geneticist who pioneered the field of transplant immunology.

Supporting paragraphs: Narinder Kumar Mehra All India Institute of Medical Sciences, Delhi
Answer: 1956