The Mount Elizabeth Novena hospital is a sprawling, modern complex just north of Singapore’s central business district. Inside, it is packed with small, specialist clinics — a high-class mega-mall for medicine that serves the local market and well-heeled visitors from around Southeast Asia.

On the seventh floor, a clinic called the Harley Street Heart and Cancer Centre has built a solid business around referrals from overseas, mainly from Indonesia and Vietnam, although some customers travel from as far afield as Mongolia and Russia, usually when they need specialist care or a second opinion.

“If they are coming because they have got a complex medical problem, often they are here because there is a word-of-mouth recommendation for a doctor in Singapore that they have heard can deal with it,” said interventional cardiologist Dr. Rohit Khurana.

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