A dataframe of patient IDs and corresponding sample IDs. If patient
has multiple samples, there will be multiple rows per patient.
Arguments
patient_id
A character string of sample IDs to query
study_id
A character string indicating which study ID should be searched.
Only 1 study allowed. If NULL, we will guess a default study ID based on your database URL.
base_url
The database URL to query
If NULL will default to URL set with set_cbioportal_db(<your_db>)