1. 2015 Sexually Transmitted Diseases Treatment Guidelines - Pelvic Inflammatory Disease (PID). Available from: https://www.cdc.gov/std/tg2015/pid.htm
2. Pelvic Inflammatory Disease (PID). Updated: January 1, 2015. Accessed: April 9, 2017. Available from: http://www.merckmanuals.com/professional/gynecology-and-obstetrics/vaginitis,-cervicitis,-and-pelvic-inflammatory-disease-pid/pelvic-inflammatory-disease-pid.
3. Centers for Disease Control and Prevention. Pelvic inflammatory disease (PID): CDC fact sheet-detailed version. CDC Web site. Available from: http://www.cdc.gov/std/pid/stdfact-pid-detailed.htm.
4. Pelvic Inflammatory Disease (PID) Statistics. Updated: January 27, 2017. Available from: https://www.cdc.gov/std/pid/stats.htm.
5. Ross J, Chacko MR. Pelvic inflammatory disease: Clinical manifestations and diagnosis. In: Post TW, Ed. UpToDate. Waltham MA: UpToDate. Available from: http://www.uptodate.com/contents/pelvic-inflammatory-disease-clinical-manifestations-and-diagnosis?source=see_link