function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aslan, Ebru Gül & Mumladze, Levan & Japoshvili, George', 1],
    ['Cho, H. - W. & An, S. L.', 8],
    ['Ekiz, Ali Nafiz & Şen, İsmail & Aslan, Ebru Gül & Gök, Ali', 1],
    ['Geiser, Elisabeth', 4],
    ['Kimoto, Shinsaku & Gressitt, J. Linsley', 1],
    ['Matsumura, Yoko & Suzuki, Kunio', 9],
    ['Mitter, Heinz & A, Upper', 1],
    ['Petitpierre, Eduard & Sacarés, Antoni & Jurado-Rivera, José A.', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);