Association of ambient PM2·5 exposure with maternal bone strength in pregnant women from Mexico City: a longitudinal cohort study oleh Haotian Wu, PhD, Marianthi-Anna Kioumourtzoglou, PhD, Allan C Just, PhD, Itai Kloog, PhD, Alison Sanders, PhD, Katherine Svensson, MS, Nia McRae, MPH, Marcela Tamayo-Ortiz, ScD, Maritsa Solano-González, MSc, Robert O Wright, ProfPhD, Martha M Téllez-Rojo, ProfPhD, Andrea A Baccarelli, ProfPhD