Which health centre is considered as the first referral unit?

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E6 Nursing_Management_and_leadership_Johny_Kutty_JosephCbs_Publishers (pp 16-364 of 374) p. 16-18
E6 Principles and Practice of NURSING Management Leadership for BSc Nursing 3rd Edi Jogindra Vati — Subpart A (pp 26-339 of 1017) p. 20-22
Practise the full RUHS, Jaipur, PB B.Sc Nursing Entrance-2018
Attempt every question from this paper in a timed mock, then review the full solution for each one.