Is the article quantitative, qualitative, or something else

Read the following article on the impact of maternal prenatal smoking on the development of childhood overweight in school-aged children from the WCU library: http://search.ebscohost.com.westcoastuniversity.idm.oclc.org/login.aspx?direct=true&db=a9h&AN=87709502&site=ehost-live. Is the article quantitative, qualitative, or something else? State the study design, research question, and the strength and limitations of the study. Can the study results be generalized? Why or why not?