function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hirata, Takuma & Fujiwara, Yoshihiro & Kikuchi, Tomohiko', 2],
    ['Hirata, Takuma & Kikuchi, Tomohiko', 1],
    ['Lee, Christine N. W. & Bamber, Roger N.', 1],
    ['Moreira, Juan & Esquete, Patricia & Cunha, Marina R.', 3],
    ['Ortiz, Manuel & Winfield, Ignacio & Cházaro-Olvera, Sergio', 1],
    ['Othman, B. H. R. & Toda, T. & Kikuchi, T.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);