APA

van Der Voort D. J. M., van Der Weijer P. H. M. & Barentsen R. (20031014). Early menopause: increased fracture risk at older age. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Chicago

van Der Voort D J M, van Der Weijer P H M and Barentsen R. 20031014. Early menopause: increased fracture risk at older age. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Harvard

van Der Voort D. J. M., van Der Weijer P. H. M. and Barentsen R. (20031014). Early menopause: increased fracture risk at older age. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

MLA

van Der Voort D J M, van Der Weijer P H M and Barentsen R. Early menopause: increased fracture risk at older age. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA. 20031014.