What is the full form of IDD?

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 114-116
E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 373-375
E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart C (pp 404-604 of 604) p. 123-125
Practise the full Bihar CHO -2019
Attempt every question from this paper in a timed mock, then review the full solution for each one.