A baby born before how many weeks is called a Premature Baby?

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) p. 30-32
E6 Anatomy Grays 43e Vol 1 Part 3 p. 12-14
Practise the full UP CHO - 2018
Attempt every question from this paper in a timed mock, then review the full solution for each one.