; or (II) a confidentiality agreement. (ii) Requirement A person using hydraulic fracturing that makes a disclosure required under clause (i) may require the execution of a written statement of need and a confidentiality agreement as soon as practicable after the determination by the State, Administrator, first responder, or healthcare practitioner, as applicable, under that clause. (iii) Professional necessity (I) In general Subject to subclause (II), a first responder or healthcare practitioner may share any information disclosed under clause (i) with other persons if the information is medically necessary. (II) Restriction A first responder or healthcare practitioner described in subclause (I) shall not make publicly available any information disclosed under clause (i). (D) No public disclosure required Nothing in subparagraph (A), (B), or (C) authorizes a State or the Administrator to publicly disclose any proprietary chemical formula. .