Hong Kong/Beijing, Countries across Asia slapped bans on Chinese dairy products Tuesday as worried parents rushed their children to hospitals for health checkups amid a widening health scare over tainted Chinese milk. From Japan to Thailand, reports spread of cookies, ice cream and even meat buns that might contain contaminated milk products blamed for four infant deaths in China. At least another 53,000 others have fallen ill. The Chinese dairy firm whose contaminated products led to a food safety crisis across Asia, suppressed complaints about the tainted milk products for months, state media said on Tuesday. Sanlu Group, the dairy firm first found to be selling melamine-contaminated tainted products, began receiving complaints of sick children as early as December 2007, state news agency Xinhua said, citing a Cabinet probe.