Hastings, RP;    Totsika, V;    Hayden, NK;    Murray, CA;    Jess, M;    Langley, E;    Margetson, JK;      (2020)    1000 Families Study, a UK multiwave cohort investigating the well-being of families of children with intellectual disabilities: cohort profile.                   BMJ Open , 10  (2)    , Article e032919.  10.1136/bmjopen-2019-032919 <https://doi.org/10.1136/bmjopen-2019-032919>.       Green open access