EFFECTIVENESS OF A GUIDEBOOK-BASED INTERVENTION IN IMPROVING PARENTAL KNOWLEDGE AND ACCESS TO SERVICES FOR CHILDREN WITH AUTISM SPECTRUM DISORDER IN HANOI. YHCĐ [Internet]. 2026 June 16 [cited 2026 Sept. 9];67(CĐ6-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5352