DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
LinksClose Window
References
Fraser GE, Yan R, Butler TL, Jaceldo-Siegl K, Beeson WL, Chan J.
Missing data in a long food frequency questionnaire: are imputed zeroes correct?.
Epidemiology 2009;
20 (02) 289-294 . Doi: 10.1097/EDE.0b013e31819642c4
We do not assume any responsibility for the contents of the web pages of other providers.