function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hu, Hongmin & He, Minghui & Wu, Youpeng & Long, Sihan', 4],
    ['Liu, Jian-Kui & Phookamsak, Rungtiwa & Dai, Dong-Qin', 19],
    ['Pasouvang, Pahoua & Karunarathna, Anuruddha', 1],
    ['Wijayawardene, Nalin N. & Dissanayake, Lakmali S. & Li, Qi-Rui', 1],
    ['Wu, Kai & Tian, Wenhui & Syed, Asad & Elgorban, Abdallah M.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);