Any study of "smoking" and fetal problems that does not so much as mention that most cigarettes deliver significant doses of fetal-damaging dioxins to a mother is suspect.

  Most cigarettes (very non-organic) are contaminated with any number of chlorine pesticide residues, and are wrapped in chlorine-bleached paper. Despite the well-known harms to mothers, fetuses, children and everyone from the resultant dioxins, those chlorine elements are still permitted.
  This study is very nice to the complicit pesticide-chlorine interests and to the cigarette makers in helping them evade PR disasters and liabilities (and perhaps criminal charges), but it is absolutely inhumane to blame the misinformed mothers for effects that cannot possibly be caused by smoke from any plant, even "evil" tobacco.  Those mothers believe and are told it's just tobacco...from "tobacco companies", after all.
  The typical product is a Dioxin Dowel or a Pesticide Peg.