(a) Notwithstanding any other provision of law, subdivisions (b) and (c) shall control the placement of a child pursuant to this chapter.
(b) A county may place children who are alcohol or controlled substance exposed or HIV positive in prospective adoptive homes pursuant to Chapter 3 (commencing with Section 1500) of Division 2 of the Health and Safety Code.
(c) If a county makes a placement pursuant to subdivision (b), a preadoptive parent trained by health care professionals may provide specialized in-home health care to that child who was placed in their home for the purpose of adoption.