Author Jørn Olsen

 
LETTER TO THE EDITOR
 

Are there too many “times-to-pregnancy”?

Scand J Work Environ Health 2016;42(2):175-176
 
LETTER TO THE EDITOR
 

Who needs selection bias?

Scand J Work Environ Health 2014;40(1):103
 
ARTICLE
 

Design options and sources of bias in time-to-pregnancy studies

Scand J Work Environ Health 1999;25(Supplement 1):5-7
 
eISSN:1795-990X
ISSN:0355-3140
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