APA (7th ed.) Citation

Thorell Eva & Kristiansson Per. (2012). Pregnancy related back pain, is it related to aerobic fitness? A longitudinal cohort study. BMC.

Chicago Style (17th ed.) Citation

Thorell Eva and Kristiansson Per. Pregnancy Related Back Pain, Is It Related to Aerobic Fitness? A Longitudinal Cohort Study. BMC, 2012.

MLA (9th ed.) Citation

Thorell Eva and Kristiansson Per. Pregnancy Related Back Pain, Is It Related to Aerobic Fitness? A Longitudinal Cohort Study. BMC, 2012.

Warning: These citations may not always be 100% accurate.