Update 'ClinicalTrials'

ClinicalTrials.md

@@ -5,6 +5,12 @@
 
 Most of the data is available at [CTTI](https://aact.ctti-clinicaltrials.org/) in a Relational DB.
 
+The API for current studies is here: https://clinicaltrials.gov/api/gui
+
 ## Historical Data
 
 Historical data is available through a custom API (only available to CBO for their project) and on the web page.
+So the options are to parse HTML or get permission to use the API
+
+# Note on API
+Clinicaltrials.gov recently changed it's api and this changed how some of the data is reported/recorded.