Correction: Typical use effectiveness of Natural Cycles: postmarket surveillance study investigating the impact of previous contraceptive choice on the risk of unintended pregnancy

• Julie HT Dang,
• Natalie J Török,
• Moon S Chen

Affiliations

Julie HT Dang

2 UC Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, California, USA

Natalie J Török

3 Division of Gastroenterology & Hepatology, Department of Medicine, Stanford University, Stanford, California, USA

Moon S Chen

2 UC Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, California, USA