It is recommended to consider the increased direct costs related to obstetric care of multiple pregnancies and paediatric care of twins and triplets (Gerris et al., 2004; Koivurova et al., 2004, 2007; Lukassen et al., 2004, 2005; Motohashi et al., 2004; Fiddelers et al., 2006; Kjellberg et al., 2006; Veleva et al., 2009; Chambers et al., 2014; Velez et al., 2014; Hernandez Torres et al., 2015; van Heesch et al., 2015; Carpinello et al., 2016).	Strong⊕⊕⊕○
It is recommended to consider increased indirect costs with multiple pregnancies due to sick leave days, over-the-counter medication, and loss of productivity because of an ill child (Fiddelers et al., 2006; Kjellberg et al., 2006; Stillman et al., 2009).	Strong⊕⊕○○
The GDG recommends that cost-related information should be provided and discussed with the patient(s) at the treatment planning stage.	GPP