VP25.08: Number of operators' annual prenatal invasive tests performed and patients' perception of pain: a prospective study in Colombia. Issue Volume 58:Issue S1(2021)Supplement (14th October 2021) - Sarmiento, P.; Ayala, N.; Rodríguez, N.; Victoria, P.; Gomez, I.; Cepeda, D.; Fajardo, C.; Sarmiento, A.