SINGAPORE -- Shares of Raffles Medical Group, the company behind the world-first operation to separate adult twins joined at the head, soared nearly 19 per cent on Monday amid hopes the high-profile surgery would succeed, analysts said. Raffles Medical Group finished at 44.5 Singapore cents, up seven cents, or 18.7 per cent, from Friday's close. Raffles Medical Group runs the Raffles Hospital in Singapore, where Laleh and Ladan Bijani, the Iranian adult twins, were into their second day on Monday of a potentially fatal operation to be separated after 29 years of being fused at the head. The sharp rise...