function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boonsoong, Boonsatien & Braasch, Dietrich', 8],
    ['Braasch, Dietrich & Boonsoong, Boonsatien', 4],
    ['Chen, Ping & Wang, Yu-Yu & Zhou, Chang-Fa', 1],
    ['Hrivniak, Ľubos & Sroka, Pavel & Bojkova, Jindriska', 19],
    ['Hrivniak, Ľuboš & Sroka, Pavel & Godunko, Roman J.', 1],
    ['Hrivniak, Ľuboš & Sroka, Pavel & Türkmen, Gencer', 1],
    ['Kluge, Nikita J.', 1],
    ['Ma, Zhen-Xing & Lei, Zhi-Ming & Li, Wen-Juan & Zhou, Chang-Fa', 8],
    ['Sivaruban, T. & Barathy, S. & Arunachalam, M. & Venkataraman, K.', 1],
    ['Vasanth, M. & Selvakumar, C. & Subramanian, K. A.', 11],
    ['Webb, J. M. & Mccafferty, W. P.', 3],
    ['Yanygina, L. V. & Potapova, N. K.', 1],
    ['Zhou, Chang-Fa & Wang, Shi-Lei & Xie, Hui', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);