Underweight, overweight, and weight change in older family caregivers and their care recipients: longitudinal evidence from a randomized controlled trial - Koponen, Sohvi; Nykänen, Irma; Savela, Roosa-Maria; Välimäki, Tarja; Suominen, Anna Liisa; Schwab, Ursula (Frontiers in Aging, 2024)