APA

Kristoffersen A. H., Petersen P. H., Bjørge L., Røraas T. & Sandberg S. (20190521). Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women. : Clinical chemistry and laboratory medicine.

Chicago

Kristoffersen Ann Helen, Petersen Per Hyltoft, Bjørge Line, Røraas Thomas and Sandberg Sverre. 20190521. Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women. : Clinical chemistry and laboratory medicine.

Harvard

Kristoffersen A. H., Petersen P. H., Bjørge L., Røraas T. and Sandberg S. (20190521). Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women. : Clinical chemistry and laboratory medicine.

MLA

Kristoffersen Ann Helen, Petersen Per Hyltoft, Bjørge Line, Røraas Thomas and Sandberg Sverre. Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women. : Clinical chemistry and laboratory medicine. 20190521.