function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benayahu, Y. & van Ofwegen, L. P.', 2],
    ['Benayahu, Yehuda & McFadden, Catherine S. & Shoham, Erez', 1],
    ['Benayahu, Yehuda & Van Ofwegen, Leen P.', 10],
    ['Dautova, Tatyana N. & Savinkin, Oleg V.', 2],
    ['Fassbender, Nico & Stefanoudis, Paris V', 1],
    ['Namin, Samimi & Ofwegen, Van', 2],
    ['Ofwegen, Leen P. van & Benayahu, Yehuda & McFadden, Catherine S.', 3],
    ['van Ofwegen, Leen P. & McFadden, Catherine S. & Benayahu, Yehuda', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);