function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 1],
    ['Bhutta, M. S. & Khan, D.', 1],
    ['Chin, Ta-hsiung & Ku, Yiming', 1],
    ['Cremonte, Florencia & Drago, Fabiana B.', 1],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 1],
    ['Jaiswal, G. P.', 5],
    ['Syrota, Ya. Yu. & Greben, O. B. & Poluda, A. M. & Maleha, O. M.', 1],
    ['Syrota, Ya. Yu. & Korol, E. M. & Kuzmin, Yu. I.', 2],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);