Accepted for Publication: May 7, 2015.
Published Online: July 6, 2015. doi:10.1001/jamapediatrics.2015.1431.
Study concept and design: Victora, Villar, Barros, Ismail, Chumlea, Bertino, Jaffer, Noble, Pang, Bhutta, Kennedy.
Acquisition, analysis, or interpretation of data: Victora, Villar, Barros, Ismail, Chumlea, Papageorghiou, Ohuma, Lambert, Carvalho, Altman, Noble, Gravett, Purwar, Frederick.
Drafting of the manuscript: Victora, Villar, Barros, Purwar, Kennedy.
Critical revision of the manuscript for important intellectual content: Villar, Barros, Ismail, Chumlea, Papageorghiou, Bertino, Ohuma, Lambert, Carvalho, Jaffer, Altman, Noble, Noble, Gravett, Frederick, Pang, Bhutta, Kennedy.
Statistical analysis: Victora, Villar, Barros, Ohuma, Altman.
Obtained funding: Villar, Kennedy.
Administrative, technical, or material support: Barros, Ismail, Papageorghiou, Lambert, Jaffer, Noble, Gravett, Purwar, Pang, Bhutta, Kennedy.
Study supervision: Barros, Ismail, Chumlea, Papageorghiou, Bertino, Carvalho, Jaffer, Purwar.
Conflict of Interest Disclosures: None reported.
Funding/Support: This project was supported by a generous grant (49038) from the Bill & Melinda Gates Foundation to the University of Oxford, for which we are very grateful. Philips Medical Systems provided the ultrasonography equipment and technical assistance throughout the project. MedSciNet UK Ltd set up the INTERGROWTH-21st Project website and developed, maintained, and supported the online data management system.
Role of the Funder/Sponsor: The funding sources played no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Group Information: Members of the International Fetal and Newborn Growth Consortium for the 21st Century (INTERGROWTH-21st) and its committees are listed in the eAppendix in the Supplement.
Additional Contributions: We thank the health authorities in Pelotas, Brazil; Beijing, China; Nagpur, India; Turin, Italy; Nairobi, Kenya; Muscat, Oman; Oxford, England; and Seattle, Washington, who facilitated the project by allowing participation of these study sites as collaborating centers. We thank the parents and infants who participated in the studies and the more than 200 members of the research teams who made the implementation of this project possible. The participating sites included: Pelotas, Brazil (Hospital Miguel Piltcher, Hospital São Francisco de Paula, Santa Casa de Misericórdia de Pelotas, and Hospital Escola da Universidade Federal de Pelotas); Beijing, China (Beijing Obstetrics and Gynecology Hospital, Shunyi Maternal and Child Health Centre, and Shunyi General Hospital); Nagpur, India (Ketkar Hospital, Avanti Institute of Cardiology Private Limited, Avantika Hospital, Gurukrupa Maternity Hospital, Mulik Hospital and Research Centre, Nandlok Hospital, Om Women’s Hospital, Renuka Hospital and Maternity Home, Saboo Hospital, Brajmonhan Taori Memorial Hospital, and Somani Nursing Home); Nairobi, Kenya (Aga Khan University Hospital, MP Shah Hospital, and Avenue Hospital); Turin, Italy (Ospedale Infantile Regina Margherita Sant’ Anna and Azienda Ospedaliera Ordine Mauriziano); Muscat, Oman (Khoula Hospital, Royal Hospital, Wattayah Obstetrics and Gynaecology Poly Clinic, Wattayah Health Centre, Ruwi Health Centre, Al-Ghoubra Health Centre, and Al-Khuwair Health Centre); Oxford, England (John Radcliffe Hospital); and Seattle, Washington (University of Washington Hospital, Swedish Hospital, and Providence Everett Hospital). Full acknowledgment of all those who contributed to the development of the INTERGROWTH-21st Project protocol appears at http://www.intergrowth21.org.uk