public void Print()
{
Console.WriteLine("PatientData.ID: " + ID.ToStringNull());
Console.WriteLine("PatientData.Name: " + Name.ToStringNull());
Console.WriteLine("PatientData.Sex: " + Sex.ToStringNull());
Console.WriteLine("PatientData.Comments: " + Comments.ToStringNull());
Console.WriteLine("PatientData.BirthDate: " + BirthDate.ToStringNull());
Console.WriteLine("PatientData.NumberOfRelatedStudies: " + NumberOfRelatedStudies.ToStringNull());
Console.WriteLine("PatientData.NumberOfRelatedSeries: " + NumberOfRelatedSeries.ToStringNull());
Console.WriteLine("PatientData.NumberOfRelatedInstances: " + NumberOfRelatedInstances.ToStringNull());
Console.WriteLine("PatientData.EthnicGroup: " + EthnicGroup.ToStringNull());
}