A paper describing inplementation of linking Finnish health register data to study health effects of prenatal exposures works as an example of gathering data for research using FMC cohort.
Rumrich IK, Vähäkangas K, Viluksela M, Gissler M, Surcel HM, de Ruyter H, Jokinen J, Hänninen O.MC Public Health. The MATEX cohort – a Finnish population register birth cohort to study health effects of prenatal exposures. BMC Public Health. 2017 Nov 7;17(1):871. doi: 10.1186/s12889-017-4881-8.