function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Caballero, Alejandro', 2],
    ['Green, E. Ernest', 1],
    ['Kaydan, Mehmet Bora & Benedicty, Zsuzsanna Konczne', 2],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 1],
    ['Stalažs, Arturs', 1],
    ['Tanaka, Hirotaka & Amano, Hiroshi', 1],
    ['Vea, Isabelle M.', 2],
    ['Watson, Gillian W.', 1],
    ['Zheng, Xinyi & San & Wu, an & Xing, Jichun', 3],
    ['Zheng, Xinyi & Xing, Jichun', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);