 In terms of the mother's side of family, the maternal grandfather died in his 60s due to what mother described as "hardening of the arteries," and the maternal grandmother died in 2003 due to stroke. 
In terms of the mother 's side of family , the maternal grandfather died in his 60s due to what mother described as " hardening of the arteries , " and the maternal grandmother died in 2003 due to stroke .