ACS : Gestational Trophoblastic Disease
- Provides a detailed guide of the disease including description, causes, diagnosis, staging, treatment options, and current research.
- http://www.cancer.org/docroot/CRI/CRI_2_3x.asp?rnav=cridg&dt=49

ACOR: Gestational Trophoblastic Disease Support
- Mailing list and archives.
- http://listserv.acor.org/archives/gtd.html

NCI: Gestational Trophoblastic Tumor
- Information about gestational trophoblastic tumor, a rare cancer formed during conception. Includes staging, prognosis, recurrence, and treatment options.
- http://www.cancer.gov/cancerinfo/pdq/treatment/gestationaltrophoblastic/patient/

Gestational Trophoblastic Tumors
- Malignant cells grow in the uterus in the tissues that are formed following conception.
- http://imsdd.meb.uni-bonn.de/cancer.gov/CDR0000062699.html

eMedicine: Hydatidiform Mole
- Provides an in-depth discussion of the condition including statistics, symptoms, diagnosis and treatment issues. Aimed at the professional level.
- http://www.emedicine.com/med/topic1047.htm