saeed Ghasemi, meimanat Hosseini, hamid AlaviMajd, hooman Manochehri, and zahra Norozi, “Comparison of perceived family structure of mothers with a disabled boy and mothers with a boy without disabilities upon circumplex model in Tehran in 1390”, Adv Nurs Midwifery, vol. 25, no. 88, pp. 1–8, Aug. 2015.