French President Francois Hollande (C) waves after visiting the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

French President Francois Hollande (C) smiles after visiting the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

French President Francois Hollande (C) waves after visiting the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

Medical staff wait for the arrival of French President Francois Hollande during his visit to the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

Police stand guard outside the Heart Institute prior to the visit of French President Francois Hollande in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

French President Francois Hollande (seated 2nd R) is given a tour of the facilities during a visit at the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

French President Francois Hollande (R) is given a tour of the facilities during a visit at the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images

French President Francois Hollande (C) walks down a corridor during a visit to the Heart Institute in Ho Chi Minh City on September 7, 2016. Hollande is in France's former colony Vietnam to meet political and business leaders in a bid to boost ties with one of southeast Asia's fastest growing economies. / AFP PHOTO / STEPHANE DE SAKUTINSTEPHANE DE SAKUTIN/AFP/Getty Images