Limitations include lack of control group during follow - up, generalizability due to education level of parents, and the brief period of treatment for NFPP. (cebc4cw.org)
Limitations include small sample size and lack of a control group at the 6 month follow - up. (cebc4cw.org)
Limitations include lack of control group during follow - up and generalizability due to education level of parents. (cebc4cw.org)