“…Of the 494 articles that were retrieved, 20 were included in the meta-analysis; four were apelin studies [4,6,7,11], nine were chemerin studies [5,8,15,16,[23][24][25][26][27], five were omentin studies [28][29][30][31][32], one study involved both apelin and omentin [12], and one study involved both chemerin and omentin [33]. The 20 studies enrolled 2981 participants, of which 1493 were GDM patients and 1488 were healthy pregnant women (controls) [4-8, 11, 12, 15, 16, 23-33] (Fig.…”