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. Author manuscript; available in PMC: 2018 Feb 2.
Published in final edited form as: Lancet Psychiatry. 2016 Mar 4;3(5):451–463. doi: 10.1016/S2215-0366(15)00540-4

Figure 1. Flow diagram of study selection and study characteristics.

Figure 1

Some studies use multiple imaging techniques and examine multiple populations – hence are represented more than once.