function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Yu & Katoh, Takehiro K. & Gao, Jian-Jun', 6],
    ['Duda, Oswald', 1],
    ['Gornostaev, N. G. & Kulikov, A. M.', 3],
    ['Gornostaev, N. G. & Lyupina, Yu. V.', 4],
    ['Gornostaev, N. G. & Sorokina, S. Yu.', 3],
    ['Grimaldi, David A.', 15],
    ['Ivannikov, A. V. & Katokhin, A. V. & Sidorenko, V. S.', 3],
    ['Jens-H', 2],
    ['Junges, João & Robe, Lizandra Jaqueline', 4],
    ['Katoh, Takehiro K. & Zhang, Guang & Zhou, Chuan-Jiang', 4],
    ['Rampasso, Augusto Santos & O’Grady, Patrick Michael', 1],
    ['Sidorenko, V. S. & Ivannikov, A. V.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);