The association between birth order and childhood brain tumors: a systematic review and meta-analysis.
Nguyen MV, Tran MT, Tran CT, Tran QH, Tuonga TT, Phung LN, Vu HX, Le LC, Boffetta P, Luu HN. The association between birth order and childhood brain tumors: a systematic review and meta-analysis. Eur J Cancer Prev. 2019 11; 28(6):551-561.