function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cheng, Jian-Li & López, Andrés & Zhang, E', 1],
    ['Day, F.', 1],
    ['Duncker, G.', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 3],
    ['Jie Li & Xianglin Chen & Bosco P. - L. Chan', 8],
    ['Mai, D. Y.', 1],
    ['Miao, C. P.', 4],
    ['Nichols, J. T. & Pope, C. H.', 1],
    ['Popta, C. M. L.', 1],
    ['Sauvage, H. E. & Dabry de Thiersant, P.', 1],
    ['Shaw, T. - H.', 1],
    ['Steindachner, F. & Döderlein, L.', 2],
    ['Wu, H. - W.', 1],
    ['Ye, Enqi & Xing, Yingchun & Zhang, Chunguang & Zhao, Yahui', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);