function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 5],
    ['Beyarslan, Ahmet', 9],
    ['Beyarslan, Ahmet & Erdoğan, Özlem Çetin', 2],
    ['Cao, Liang-Ming & Achterberg, Cornelis Van & Tang, Yan-Long', 1],
    ['Li, Yang & Achterberg, Cornelis Van & Chen, Xue-Xin', 18],
    ['Madl, M. & Achterberg, C. Van', 9],
    ['Madl, Michael', 19],
    ['Sakenin Chelav, H. & Coronado-Blanco, J. M. & Samin, N.', 1],
    ['Samartsev, Konstantin & Ku, Deok-Seo', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);