Fig. 1

Venn diagrams presenting the numbers of all physicians and midwives/nurses who either agreed/strongly agreed or disagreed/strongly disagreed (specified) with the following three statements: disagreed or strongly disagreed with “Obstetric ultrasound are often performed for non-medical purposes in my country” (A; blue area), agreed or strongly agreed with “Pregnant women should be able to have non-medical ultrasound on their own request” (B; beige area), and disagreed or strongly disagreed with “Commercialisation of ultrasound is a problem in my country” (C; green area)