function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguiar, Aline & Morais, Drausio Honorio', 1],
    ['Cui, Yongde & He, Xuebao & Peng, Yu & Wang, Hongzhu', 5],
    ['Cui, Yongde & Wang, Hongzhu', 3],
    ['Iizuka, Akira', 1],
    ['Nguyen, Tung T. & Nguyen, Anh D. & Tran, Binh T. T.', 2],
    ['Ohtaka, Akifumi', 11],
    ['Ohtaka, Akifumi & Usman, Rustam', 1],
    ['Perrier, Edmond', 1],
    ['Pinder, Adrian M. & Brinkhurst, Ralph O.', 1],
    ['Rodriguez, Pilar & Fend, Steven V.', 6],
    ['Schenková, Jana & Pařil, Petr & Petřivalská, Karla', 2],
    ['Shen, Huei-Ping & Chang, Chih-Han & Chih, Wen-Jay', 1],
    ['Timm, Tarmo', 3],
    ['Timm, Tarmo & Arslan, Naime & Rüzgar, Melih & Martinsson, Svante', 2],
    ['Šundić, Danijela & Radujković, Branko M.', 13],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=55)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);