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Lean mass of offspring of non-smoking women showing the difference between those whose grandmothers smoked prenatally compared with those who did not (MGM, maternal grandmother; PGM, paternal grandmother; M, mother; + smoked prenatally; − did not smoke prenatally); (*) P < 0.10; * P < 0.05; ** P < 0.01; and *** P < 0.001.
