SINGAPORE - Every day, Madam Ng Gim is reminded that her four adult children have special needs, sometimes through unwelcome chatter when strangers stare. Madam Ng's sons Lee Eng Ang, 56, and Lee Eng Chwee, 50, and daughters Lee Bee Lan, 54, and Lee Peng Peng, 52, were born with intellectual disabilities. The 77-year-old, who is unclear about her own.