function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arfianti, Tri & Wongkamhaeng, Koraon', 1],
    ['Ariyama, Hiroyuki', 2],
    ['Hossain, M. Belal & Hughes, L. E.', 2],
    ['Joseph, Philomina & Nandan, S. Bijoy & Jayachandran, P. R.', 2],
    ['Marin, Ivan N. & Palatov, Dmitry M.', 3],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 3],
    ['Zhao, Shuangyan & Liu, Cunqi & Hou, Zhonge', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);