Association between maternal haemoglobin concentrations and maternal and neonatal outcomes: the prospective, observational, multinational, INTERBIO-21st fetal study by Ohuma, EO, Jabin, N, Young, MF, Epie, T, Martorell, R, Peña-Rosas, JP, Garcia-Casal, MN, INTERBIO-21st Consortium, Papageorghiou, AT, Kennedy, SH, Villar, J

International values for haemoglobin distributions in healthy pregnant women by Ohuma, EO, Young, MF, Martorell, R, Ismail, LC, Peña-Rosas, JP, Purwar, M, Garcia-Casal, MN, Gravett, MG, de Onis, M, Wu, Q, Carvalho, M, Jaffer, YA, Lambert, A, Bertino, E, Papageorghiou, AT, Barros, FC, Bhutta, ZA, Kennedy, SH, Villar, J