这有个家长问几乎同样问题,大夫的回复可参考
http://forums.webmd.com/3/parenting-exchange/forum/2527/5
所有跟帖:
• Thanks. Readthe link. It is very helpful and assuring. -kongkong- ♀ (0 bytes) () 01/07/2012 postreply 07:08:22