function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kapustin, Dmitry A. & Glushchenko, Anton M.', 1],
    ['Na, Xinyuan & Liu, Jiaming & Zhang, Ying', 1],
    ['Solak, Cueneyt Nadir & Wojtal, Agata Zofia & Peszek, Lukasz', 3],
    ['Tseplik, Natalia D. & Maltsev, Yevhen I. & Glushchenko, Anton M.', 2],
    ['Yu, Pan & You, Qingmin & Bi, Yonghong & Wang, Quanxi', 1],
    ['Yu, Pan & You, Qingmin & Pang, Wanting & Wang, Quanxi', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);