function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Behounek, G. & Kononenko, V. S.', 23],
    ['Han, H. L. & Kononenko, V. S.', 49],
    ['Han, Hui Lin & Kononenko, Vladimir S.', 10],
    ['Han, Hui-Lin & Kononenko, Vladimir S. & Behounek, Gottfried', 3],
    ['Matov, A. Yu. & Komarovov, E. V.', 1],
    ['Pekarsky, Oleg', 1],
    ['Pekarsky, Oleg & Saldaitis, Aidas', 1],
    ['Saldaitis, Aidas & Volynkin, Anton V.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);