van Zutphen, MMilder, IErivmBemelmans, WJrivm2025-03-192025-03-1920081830297110.1016/j.ypmed.2008.01.003https://rivm.openrepository.com/handle/10029/643303Usage of an online healthy lifestyle program by pregnant women attending midwifery practices in AmsterdamArticlePrev Med 2008; 46(6):552-72025-03-19