diff --git a/Medical/MedicalPostgresqlDatabase/AbstractPostgresqlStorage.cs b/Medical/MedicalPostgresqlDatabase/AbstractPostgresqlStorage.cs
index 4f3a767..9e601ed 100644
--- a/Medical/MedicalPostgresqlDatabase/AbstractPostgresqlStorage.cs
+++ b/Medical/MedicalPostgresqlDatabase/AbstractPostgresqlStorage.cs
@@ -31,7 +31,6 @@ namespace MedicalPostgresqlDatabase
 
         public virtual void Delete(int id)
         {
-            long _;
             Delete(id, out _);
         }
         public virtual void Delete(int id, out long elapsedMilliseconds)
@@ -48,7 +47,6 @@ namespace MedicalPostgresqlDatabase
         }
         public virtual T? Get(int id)
         {
-            long _;
             return Get(id, out _);
         }
         public virtual T? Get(int id, out long elapsedMilliseconds)
@@ -70,7 +68,6 @@ namespace MedicalPostgresqlDatabase
         }
         public virtual List<T> GetAll()
         {
-            long _;
             return GetAll(out _);
         }
         public virtual List<T> GetAll(out long elapsedMilliseconds)
@@ -92,7 +89,6 @@ namespace MedicalPostgresqlDatabase
         }
         public virtual void Insert(T item)
         {
-            long _;
             Insert(item, out _);
         }
         public virtual void Insert(T item, out long elapsedMilliseconds)
@@ -137,7 +133,6 @@ namespace MedicalPostgresqlDatabase
         }
         public virtual void Update(T item)
         {
-            long _;
             Update(item, out _);
         }
         public virtual void Update(T item, out long elapsedMilliseconds)