          pcr
        GROUP BY
          study_time_collected, study_time_collected_unit, participantid
-       
+     
        UNION
-       
+     
        SELECT
          study_time_collected,
          study_time_collected_unit,

         study_time_collected, study_time_collected_unit, participantid

       UNION
       
       SELECT
         study_time_collected,
         study_time_collected_unit,
         participantid AS pid,
         COUNT(virus) AS features,
         'neut_ab_titer' AS Name,
         'NAb' AS Label
       FROM

SELECT
  dataset_n.pid AS participantId,
  dataset_n.Name,
