public String toString() {
		return (userID == null ? "" : userID + ", ") + (firstName == null ? "" : firstName + " ")
				+ (lastName == null ? "" : lastName) + (klass == null ? "" : ", " + klass)
				+ (institution == null ? "" : ", " + institution) + (state == null ? "" : ", " + state)
				+ (country == null ? "" : ", " + country) + (emailAddress == null ? "" : ", " + emailAddress);
	}