English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Pro

Presents the zaia usage as premium feature

ZAIA

Presents AI Discovery search usage as a premium feature

AI Discovery

Presents AI Discovery explain and summary usage as a premium feature

Content Analysis

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Presents the pdf analysis as premium feature

PDF Analysis

1500 Top-up

3000 Top-up

Zendy Basic

2500 Top-up

Zendy Unlimited

Presents the access of premium content as premium feature

Premium Content

Citation   Clark DA. The power of observation. Am J Reprod Immunol 2011; 66: 71–75   Problem   In the golden age of evidence‐based medicine, how should one view the cohort‐controlled study of IVIG + anti‐TNF‐α (Humira) in recurrent  in vitro  fertilization (IVF) failure patients with an elevated Th1/Th2 cytokine production ratio.   Method   Critical analysis of the nature of evidence for causation.   Results  A better delivery rate and a live birth rate per embryo approaching the estimated maximum possible in patients whose elevated Th1/Th2 ratio corrected to normal compared to those with an incomplete correction is a strong argument for causation. A maximal improvement when treatment was given 61–120 days before embryo transfer suggests a possible mechanism via improving the physiology during follicle development.   Conclusion   Independent replication to verify results would augment power.