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=== Other Theories === | === Other Theories === | ||
* Digit Ratio https://www.nature.com/articles/s41598-020-72486-6 | * Digit Ratio https://www.nature.com/articles/s41598-020-72486-6 | ||
=== Schizophrenia and Birth Order === | |||
* More Older Siblings, Maternal Schizophrenia, Older Fathers and Younger Mothers https://doi.org/10.1186/1471-244X-4-41 | |||
* More Older Siblings, Higher Intermediate or Unemployment, Rivalry and lack of Warmth https://doi.org/10.3389/fpsyt.2020.00321 | |||
* Age at first birth being higher than 27 ("the wall") https://www.nature.com/articles/s41598-018-28160-z |