Investors are rushing into China's booming healthcare business, helping M&A deal values surpass those of the hot Internet sector, as the country prepares to cater to hundreds of millions of elderly patients. "When you look at the hospital and provision sector in particular, the point around doctor availability is an important one," said Vikram Kapur, a partner in Bain & Company's Hong Kong office. "So the risk to be managed is around making sure that you can attract enough physicians to private institutions."