“…In terms of gender, the majority of the ICs are women [ 43 , 44 , 45 , 46 , 47 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 58 , 59 , 60 , 61 ] and in most articles, the IC was the spouse or the daughter/son of the SS [ 43 , 44 , 45 , 47 , 49 , 50 , 52 , 55 , 60 ]. The average age of the ICs is over 50 years, with the exception of Goudarzian et al [ 54 ] and Mohammadi et al [ 61 ], Mou et al [ 57 ], and Hussin et al [ 60 ], where it is over 45 years.…”