function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 2],
    ['Drago, Fabiana B. & Lunaschi, Lía I. & Draghi, Regina', 2],
    ['Lunaschi, Lia I. & Álvarez, Victor Hugo Merlo', 1],
    ['Lunaschi, Lía I. & Drago, Fabiana B.', 2],
    ['Shakarbaev, U. A. & Akramova, F. D. & Azimov, D. A.', 1],
    ['Szidat, L.', 2],
    ['Ukoli, F. M. A.', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 1],
    ['Yamaguti, S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);