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"HRR(S)." Fullformexpand.com, https://www.fullformexpand.com/hrrs/hospital-referral-regions. Accessed 23 Feb. 2026.
Fullformexpand.com, 2026. "HRR(S)." Accessed February 23, 2026. https://www.fullformexpand.com/hrrs/hospital-referral-regions.
"HRR(S)." (n.d.). Fullformexpand.com. Retrieved February 23, 2026, from https://www.fullformexpand.com/hrrs/hospital-referral-regions.
HRR(S). (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/hrrs/hospital-referral-regions (Accessed: 23 February 2026).