function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexiou, Sotiris', 1],
    ['Desutter-Grandcolas, Laure', 1],
    ['Gu, J. X. & Dai, L. & Huang, J. H.', 1],
    ['He, Zhi-Xin & Wu, Qian & Ma, Li-Bin', 2],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 1],
    ['Hugel, S.', 2],
    ['Mal, Jhabar & Nagar, Rajendra & Swaminathan, R.', 1],
    ['Otte, Daniel', 67],
    ['Scudder, Samuel Hubbard', 1],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 1],
    ['Tan, Ming Kai & Baroga-Barbecho, Jessica B. & Yap, Sheryl A.', 6],
    ['Vega, Hermes & Cetzal-Ix, William & Mó, Edgar', 1],
    ['Yuan, Wei & Zheng, Yan-Na & Ma, Li-Bin & Gu, Jun-Jie', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);