function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Farahi, Sara & Shishehbor, Parviz & Nemati, Alireza', 1],
    ['Kazemi, Shahrooz & Klompen, Hans', 4],
    ['Kazemi, Shahrooz & Klompen, Hans & Moraza, María L.', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 8],
    ['Lin, Jian-Zhen', 1],
    ['Plumari, Massimo & Kazemi, Shahrooz', 3],
    ['Saito, Hajime', 5],
    ['Seeman, Owen D.', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);