The major cause for childhood illness is:

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) pp. 46-48, 16-18
Practise the full AIIMS BHOPAL NO- 2018( Shift-2nd)
Attempt every question from this paper in a timed mock, then review the full solution for each one.