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. Author manuscript; available in PMC: 2013 Dec 15.
Published in final edited form as: J Affect Disord. 2012 Aug 16;142(1-3):90–97. doi: 10.1016/j.jad.2012.03.048

Figure 1.

Figure 1

Figure 1

Shared liability (A) and reciprocal causation (B) models depicting potential relationships among MD, INIT, and FTND. For the sake of simplicity, only the causal paths (labeled with “β”) and latent genetic paths (labeled with “a”) are depicted; however, the genetic paths are accompanied by shared and unique environmental paths (described as “C” and “E”, respectively, in the Methods).