function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 1],
    ['Fartyal, Rajendra S. & Sati, Pradeep C. & Pradhan, Sushmika', 14],
    ['Gornostaev, N. G. & Lyupina, Yu. V.', 1],
    ['Gornostaev, N. G. & Sorokina, S. Yu.', 1],
    ['Ivannikov, A. V. & Katokhin, A. V. & Sidorenko, V. S.', 2],
    ['Jens-H', 3],
    ['Katoh, Takehiro K. & Zhang, Guang & Toda, Masanori J.', 14],
    ['Russo, Claudia A. M. & Mello, Beatriz & Frazão, Annelise', 1],
    ['Watabe, H. & Sidorenko V. S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    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);