Returns ``followup'' assay results, which are groups of assay results for an animal beginning with the first non-negative result and all subsequent results.

Returns ``followup'' assay results, which are groups of assay results for an animal beginning with the first non-negative result and all subsequent results.

get_followup(dsn, start_date = "1-1-2013")

Arguments

dsn	character with the dataset name
start_date	character with start date in mm-dd-yyyy format.