Twenty-five state-run hospitals in Japan called for bids for rehabilitating their old buildings in the April-September period, but 21 of them, or 84 percent, have not been able to find any winning bidders as constructors are reluctant to accept low-cost orders, given labor shortages and rising labor costs, the National Hospital Organization said Saturday.Twenty-five state-run hospitals in Japan called for bids for rehabilitating their old buildings in the April-September period, but 21 of them, or 84 percent, have not been able to find any winning bidders as constructors are reluctant to accept low-cost orders, given labor shortages and rising labor costs, the National Hospital Organization said Saturday.