Anne-Marie Nybo Andersen, Jan Wohlfahrt, Peter Christens, Jørn Olsen, Mads Melbye
Andersen A N, Wohlfahrt J, Christens P, Olsen J, Melbye M.
Maternal age and fetal loss: population based register linkage study
BMJ 2000; 320 :1708
doi:10.1136/bmj.320.7251.1708