Question: Groote Schuur Hospital is a large, government-funded, teaching hospital situated on the slopes of Devil's Peak in the city of Cape Town, South Africa, it's famous for being the institution where the first human-to-human heart transplant took place, conducted by University of Cape Town-educated surgeon Christiaan Barnard on the patient Louis Washkansky, he was a South African man who was the recipient of the world's first human-to-human heart transplant, and the first patient to regain consciousness following the operation, and lived for how many days?
Context: Pierre Rene Grondin, MD (August 18, 1925 - January 17, 2006) was a Canadian cardiac surgeon who was one of the first doctors to perform a successful heart transplant.  He was legendary in his surgical abilities and style and brought many innovations to the Montreal Heart Institute after his post-graduate training with pioneers Michael DeBakey and Denton Cooley in Houston, Texas.  He was one of a select few heart surgeons worldwide who participated in the development of open heart surgery using the heart-lung machine in the early 1960s.  He performed the first Canadian heart transplantation at the Montreal Heart Institute in May, 1968 shortly after the first successful heart transplant in the world in December, 1967 in Cape Town, South Africa by Dr. Christiaan Barnard. Christiaan Neethling Barnard (8 November 1922 – 2 September 2001) was a South African cardiac surgeon who performed the world's first human-to-human heart transplant on December 3, 1967, and the second overall heart transplant (James Hardy did a xenotransplant in 1964).  Growing up in Beaufort West, Cape Province, he studied medicine and practised for several years in his native country.  As a young doctor experimenting on dogs, Barnard developed a remedy for the infant defect of intestinal atresia.  His technique saved the lives of ten babies in Cape Town and was adopted by surgeons in Britain and the United States.  In 1955, he travelled to the United States and was initially assigned further gastrointestinal work by Owen Wangensteen.  Vince Gott introduced him to the heart-lung machine, and Barnard was allowed to transfer to the service run by open heart surgery pioneer Walt Lillehei.  Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at the Groote Schuur Hospital, Cape Town. Groote Schuur Hospital is a large, government-funded, teaching hospital situated on the slopes of Devil's Peak in the city of Cape Town, South Africa.  It was founded in 1938 and is famous for being the institution where the first human-to-human heart transplant took place, conducted by University of Cape Town-educated surgeon Christiaan Barnard on the patient Louis Washkansky. Denise Ann Darvall (27 February 19423 December 1967) was the donor in the world’s first successful human heart transplant, performed at Groote Schuur Hospital, South Africa, by a team of surgeons led by Christiaan Barnard. Louis Washkansky (1913 – 21 December 1967) was a South African man who was the recipient of the world's first human-to-human heart transplant, and the first patient to regain consciousness following the operation.  Mr. Washkansky lived for 18 days and was able to speak with his wife and reporters. Bongani Mawethu Mayosi (born 28 January 1967) is a South African cardiology professor who was awarded his county's highest honour, the Order of Mapungubwe (Silver) in 2009.  He is the Dean of the Faculty of Health Sciences at the University of Cape Town and is an A-rated National Research Foundation researcher.  Prior to this, he was head of the Department of Medicine at the University of Cape Town and Groote Schuur Hospital.  His father was a medical doctor and so is his wife; his research interests include Rheumatic fever, Tuberculous pericarditis and Cardiomyopathy.  He is a member of the Academy of Science of South Africa and a former President of the College of Physicians of South Africa. The Heart of Cape Town Museum is a museum complex in the Observatory, Cape Town suburb of Cape Town, South Africa.  It is in the Groote Schuur Hospital on Main Road.  The hospital was founded in 1938 and is famous for being the institution where the first human heart transplant took place, conducted by University of Cape Town-educated surgeon Christiaan Barnard on the patient Louis Washkansky.  The museum opened on December 3, 2007 marking the 40th anniversary of the heart transplant by Christiaan Barnard.  The Heart of Cape Town Museum honors everyone who played a major role in a surgical feat that created a new medical era.  It also brings attention to ethical and moral implications that came up at the time.  It also highlights the ways in which Barnard's accomplishment put South Africa and the University of Cape Town on an international stage. Philip Blaiberg (24 May 1909 – 17 August 1969) was a South Africa dentist and the third person to receive a heart transplant.  On 2 January 1968, in Cape Town, Dr. Christiaan Barnard performed the third heart transplant in the world on the fifty-nine-year-old Blaiberg (Dr. Adrian Kantrowitz performed the world's second heart transplant, on a baby in the USA, only three days after Dr. Barnard performed the first).  Blaiberg survived the operation, and continued with his life for nineteen months and fifteen days before dying from heart complications on 17 August 1969.  The success of Blaiberg's heart transplant spiraled the progress made in regard to heart transplantation. Richard Rowland Lower (August 15, 1929 – May 17, 2008) was an American pioneer of cardiac surgery, particularly in the field of heart transplantation.  Lower was born in Detroit, attended Amherst College, and received his medical degree from Cornell University in 1955.  Lower and Norman Shumway developed many of the techniques required to conduct successful heart transplantation, including the use of hypothermia and the orthotopic technique, which became the standard technique for cardiac transplantation.  Lower and Shumway conducted their research (using dogs, initially) at Stanford.  Lower left Stanford to head the cardiac program at the Medical College of Virginia, and competed with Shumway, Adrian Kantrowitz, and Christiaan Barnard to conduct the first successful human heart transplant.  While the Americans (Lower, Shumway, and Kantrowitz) made preparations to conduct the first successful transplant, they were delayed due to disagreements over the differences between cardiac death versus brain death.  While a solution was being found to those questions, Barnard (who used Shumway and Lower's research) conducted the first successful (i.e. not resulting in immediate death) human transplantation in South Africa on December 3, 1967.  Adrian Kantrowitz subsequently also conducted a transplant in New York City on December 6, 1967.  Shumway performed his first human transplantation on January 6, 1968.  Lower performed his first successful human transplantation in May of that same year. Dr A. G. K. Gokhale (also known as Dr Alla Gopala Krishna Gokhale; Telugu: గోపాల కృష్ణ గోఖలే; born 2 October 1959; MBBS, M.S. (General Surgery), M.Ch (Cardio-thoracic surgery), DNB (Cardiothoracic Surgery), SMP (IIM-C)) is an Indian Cardiac Surgeon at Apollo Hospitals.  He is known for being the first to perform a successful human-to-human heart transplant and first successful lung transplant in the state of Andhra Pradesh, India.  He worked at Yashoda Hospitals and Global hospitals before this where he performed many of his historic achievements such as the first Heart Transplant, and Minimal access cardiac surgeries.  He is also the Chairman of the charitable trust called "Sahrudaya Health, Medical and Educational Trust" that monetarily assists and provides moral support to poor heart patients and spread knowledge about prevention of heart diseases and is running a successful open heart surgery programme in Guntur Government General hospital.  A heart surgeon by profession, and a philanthropist by nature, Dr. Gokhale along with his core team of professionals and generous donors, have dedicated their time, skills and resources in reaching out to those in need.For his contributions, he was honored by many associations including Indian Medical Association, Rotary and Lions clubs.  He was felicitated by Government of Andhra Pradesh with Ugadi Puraskaram (2015) and in recognition of his contributions to the profession and society, he was honored by the Government of India with “Padma Sri”award(2016).
Answer: 18