function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cho, H. - W. & An, S. L.', 12],
    ['Clark, Shawn M. & Lillrose, Tiffany & Belo Neto, Luiz A.', 1],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Fabricius, Johann Christian', 2],
    ['Groll, Elisa Von', 1],
    ['Kimoto, Shinsaku & Gressitt, J. Linsley', 3],
    ['Lee, Chi-Feng & Matsumura, Yoko', 5],
    ['Matsumura, Y. & Sasaki, S. & Imasaka, S. & Sano, M. & Ôhara, M.', 4],
    ['Matsumura, Yoko & Suzuki, Kunio', 7],
    ['Pic, Maurice', 2],
    ['Sergeev, M. E.', 2],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);