function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 1],
    ['Beyarslan, Ahmet', 1],
    ['Beyarslan, Ahmet & Gadallah, Neveen S. & Ghahari, Hassan', 3],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 16],
    ['Derafshan, Hossein Ali & Rakhshani, Ehsan & Farahani, Samira', 4],
    ['Farahani, Samira & Talebi, Ali Asghar & Achterberg, Cornelis Van', 3],
    ['Gupta, Ankita & Achterberg, Cornelis Van & Pattar, Rohit', 1],
    ['Haliday, Alexander Henry', 1],
    ['Madl, M. & Achterberg, C. Van', 2],
    ['Martinez, Juan José', 4],
    ['Mifsud, David & Farrugia, Lucia & Shaw, Mark R.', 1],
    ['Sakenin, H. & Naderian, H. & Samin, N. & Rastegar, J.', 1],
    ['Sharkey, Michael J. & Janzen, Daniel H. & Hallwachs, Winnie', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);