function [R_i1, nimp1, nimp2] = qrs_detect21(x,a1,a2,sampleRate)
 %%
% INPUT:
% x
% sampleRate
%
% OUTPUT:
% R_i1
%=======================================================================
% Authors' contact:
% Morteza Zabihi (morteza.zabihi@gmail.com) & Ali Bahrami Rad(abahramir@gmail.com)
% Black Swan Team (April 2017)
%=======================================================================
% This code is released under the GNU General Public License.
% You should have received a copy of the GNU General Public License along with this program.
% If not, see <http://www.gnu.org/licenses/>.

% By accessing the code through Physionet webpage and/or by installing, copying, or otherwise
% using this software, you agree to be bounded by the terms of GNU General Public License.
% If you do not agree, do not install copy or use the software.

% We make no representation about the suitability of this licensed deliverable for any purppose.
% It is provided "as is" without express or implied warranty of any kind.
% Any use of the licensed deliverables must include the above disclaimer.
% For more detailed information please refer to "readme" file.
%%
[QRS, ~, ~] = qrs_detect2(x,0.25,0.6,sampleRate);
[R_i1] = QRS_CORRECTION_BLACKSWAN(x, QRS);
    
a1 = [];
a2 = [];
nimp1 = [];
nimp2 = [];