APA

Kannus P., Niemi S., Parkkari J., Sievänen H. & Palvanen M. (20090804). Declining incidence of low-trauma knee fractures in elderly women: nationwide statistics in Finland between 1970 and 2006. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Chicago

Kannus P, Niemi S, Parkkari J, Sievänen H and Palvanen M. 20090804. Declining incidence of low-trauma knee fractures in elderly women: nationwide statistics in Finland between 1970 and 2006. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Harvard

Kannus P., Niemi S., Parkkari J., Sievänen H. and Palvanen M. (20090804). Declining incidence of low-trauma knee fractures in elderly women: nationwide statistics in Finland between 1970 and 2006. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

MLA

Kannus P, Niemi S, Parkkari J, Sievänen H and Palvanen M. Declining incidence of low-trauma knee fractures in elderly women: nationwide statistics in Finland between 1970 and 2006. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA. 20090804.