This was a well-written review of a long-standing study. Overall it presents the data in a way that is easily understood. The study definitely has limitations, which the author details and indicates what concepts need further research. This study is wide reaching, studying not only the women who had the abortion, but outcomes of their children (both those conceived before and subsequent to the abortion). It is a bit odd reading back when they are discussing Roe v Wade and the potential outcomes of the change in the court. 

Many of the detracting statements I've seen say it is flawed because they only looked at women who wanted an abortion. That is explained multiple times in the book, and comparing the outcomes of women who wanted an abortion but were unable to have them with women who never wanted an abortion and didn't get one, tells us nothing about outcomes, as their wants and needs were different.