Authors’ contributions
| Name | Contribution to study |
|---|---|
| Brazil | |
| Vanda E Felli | Principal Investigator in Brazil and coordinator of data collection for nurses |
| Maria H Marziale | Coordinator of data collection in sugar cane cutters |
| Leila M Sarquis | Coordinator of data collection for office workers |
| Ecuador | |
| Raúl Harari | Principal Investigator in Ecuador |
| Florencia Harari | Coordinator of data collection for office workers |
| Rocío Freire | Coordinator of data collection for nurses |
| Natalia Harari | Coordinator of data collection for flower plantation workers. |
| Colombia | |
| Lope H Barrero. | Principal Investigator in Colombia |
| Magda V Monroy | Data collection in Colombia |
| Leonardo A Quintana. | Oversight of study design and conduct in Colombia |
| Costa Rica | |
| Marianela Rojas | Coordinaotor of data collection and supervised data entry and checking in Costa Rica |
| USA | |
| Sarah A. Felknor | Joint Principal Investigator for Costa Rica and Nicaragua with input also to study design in Colombia |
| David Gimeno | Joint Principal Investigator for Costa Rica and Nicaragua |
| Eduardo J. Salazar Vega | Collation and checking of data from Costa Rica and Nicaragua |
| UK | |
| David Coggon | Principal Investigator for the international CUPID study. Initiated and designed the study, oversaw statistical analysis, and wrote first draft of manuscript. |
| Georgia Ntani | Carried out statistical analysis |
| Keith T Palmer | Contributed to design of international study |
| Ken Cox | Collation and checking of international dataset |
| E Clare Harris | Supervision of data collection in UK |
| Anna Cattrell | Data collection in UK |
| Spain | |
| Sergio Vargas-Prada | Collection, preparation and checking of data in Spain |
| Consol Serra | Joint Principal Investigator in Spain |
| José Miguel Martínez | Supervision of data collection and preparation in Spain |
| George Delclos | Supervision of data collection in Spain |
| Fernando G. Benavides | Joint Principal Investigator in Spain |
| Italy | |
| Matteo Bonzini | Principal Investigator for Italy |
| Michele Carugno | Collection and checking of data in Italy |
| Marco M Ferrario | Contributed to design of data collection in Italy |
| Angela C Pesatori | Contributed to design of data collection in Italy |
| Greece | |
| Eleni Solidaki | Collection, preparation and checking of data in Greece |
| Leda Chatzi | Contributed to data collection and preparation in Greece |
| Panos Bitsios | Contributed to data collection and preparation in Greece |
| Manolis Kogevinas | Principal Investigator for data collection in Greece |
| Estonia | |
| Eda Merisalu | Principal Investigator in Estonia. |
| Kristel Oha | Carried out data collection in Estonia |
| Tiina Freimann | Data preparation in Estonia |
| Lebanon | |
| Rima R. Habib | Principal Investigator in Lebanon |
| Iran | |
| Farideh Sadeghian | Principal Investigator in Iran |
| Ali Sadeghian | Oversight of data collection in Iran |
| Pakistan | |
| M Masood Kadir | Principal Investigator in Pakistan |
| Sri Lanka | |
| Sudath SP Warnakulasuriya | Collection, preparation and checking of data in Sri Lanka |
| Roshini J Peiris-John | Supervision of data collection in Sri Lanka |
| Nalini Sathiakumar | Supervision of data collection in Sri Lanka |
| A Rajitha Wickremasinghe | Principal Investigator for Sri Lanka |
| Japan | |
| Ko Matsudaira | Principal Investigator for Japan |
| Noriko Yoshimura | Contributed to design of data collection in Japan, including translation of questionnaire |
| South Africa | |
| Busisiwe Nyantumbu | Collection, preparation and checking of data in South Africa |
| Australia | |
| Malcolm R Sim | Principal investigator for Australia |
| Helen L Kelsall | Coordinated collection, preparation and checking of data in Australia |
| Victor CW Hoe | Contributed to collection, preparation and checking of data in Australia |
| Donna M Urquhart | Contributed to questionnaire development and data collection in Australia |
| New Zealand | |
| Helen Harcombe | Contributed to data collection and obtaining funding in New Zealand. |
| Sarah Derrett | Contributed to collection, analysis and interpretation of data and obtaining funding in New Zealand. |
| David McBride | Contributed to initiation of study in New Zealand, and obtaining funding. |
| Peter Herbison | Contributed to analysis and interpretation of data. |
| Andrew Gray | Contributed to acquisition of data and supervision of study in New Zealand. |
In addition, all authors provided critical input to the draft manuscript and its subsequent revision.