function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bhansali, Sneha & Wesener, Thomas', 10],
    ['Chen, Hui-Ming & Zheng, Chang-Bin & Jiang, Xuan-Kong', 1],
    ['Donworth, Patrick & Wesener, Thomas', 5],
    ['Hollier, John & Stöckli, Eduard & Wesener, Thomas', 1],
    ['Likhitrakarn, Natdanai & Jirapatrasilp, Parin', 12],
    ['Mauriès, Jean-Paul', 5],
    ['Rosenmejer, Trine & Enghoff, Henrik & Moritz, Leif', 5],
    ['Semenyuk, Irina & Golovatch, Sergei I. & Wesener, Thomas', 13],
    ['Spiegel, Didier Van den & Golovatch, Sergei I.', 1],
    ['Srisonchai, Ruttapon & Likhitrakarn, Natdanai', 1],
    ['Srisonchai, Ruttapon & Sutcharit, Chirasak', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);