This website provides online calculators for predicting certain pregnancy outcomes, particularly live birth rate. You are suggested to cite the references based on which these calculators are implemented when appropriate. This program is copyrighted by Heping Zhang, Yale University. Thanks to Jiuzhou Wang and Yajie Duan from SUSTech in China and Zhe Cai from Shanghai University for implementing the program. By using this program, you understand and agree that you are fully responsible for the use. Suggestions for improvement can be emailed to firstname.lastname@example.org. You can select and proceed with a choice below if you accept this term for the usage.