function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 1],
    ['Ahmed, Ishtiaq & Kazmi, Sarfrazul Islam', 3],
    ['Beyarslan, Ahmet', 5],
    ['Beyarslan, Ahmet & Erdoğan, Özlem Çetin', 1],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 2],
    ['Li, Yang & He, Jun-Hua & Chen, Xue-Xin', 12],
    ['Madl, M. & Achterberg, C. Van', 1],
    ['Petersen-Silva, Ricardo & Pujade-Villar, Juli & Naves, Pedro', 2],
    ['Samartsev, Konstantin & Ku, Deok-Seo', 1],
    ['Wang, Yi-Ping & Shi, Min & Chen, Xue-xin & He, Jun-Hua', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);