1. Secretion and excretion of human chorionic gonadotropin during early pregnancy 
Pete N. Lohstroh, B.S., James W. Overstreet, M.D., Ph.D., Dennis R. Stewart, Ph.D., Steven T. Nakajima, M.D., Jeffrey R. Cragun, M.D., Stephen P. Boyers, M.D., Bill L. Lasley, Ph.D. 
Fertility and Sterility 
Volume 83, Issue 4, Pages (April 2005)
DOI: /j.fertnstert
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Relative and cumulative frequencies of the first day of hCG detection postgonadotropin surge for cycles that resulted in early pregnancy loss (EPL) (blue line), clinical spontaneous abortion (CAB) (green line), or successful pregnancy (SP) (red line) in serum (A) and urine (B).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

3. FIGURE 2
Boxplot comparison of the first day of hCG detection postgonadotropin surge for cycles that resulted in early pregnancy loss (EPL), clinical spontaneous abortion (CAB), or successful pregnancy (SP) in serum (A) and urine (B).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions

4. FIGURE 3
Boxplot comparison of the log-transformed increments of hCG Rise on the first day of hCG Detection postgonadotropin surge for cycles that resulted in early pregnancy loss (EPL), clinical spontaneous abortion (CAB), or successful pregnancy (SP) in serum (A) and urine (B).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions