function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aurivillius, Per Olof Christopher', 6],
    ['Delabye, Sylvain & Maicher, Vincent & Safian, Szabolcs', 1],
    ['Komal, J. & Shashank, P. R. & Sondhi, Sanjay & Madan, Sohail', 2],
    ['Mbata, Keith J. & Prins, Jurate De', 21],
    ['Prins, Willy De', 4],
    ['Tufová, Jana', 1],
    ['Walker, Francis', 10],
    ['Wang, Xing & Wang, Min & Zolotuhin, Vadim V.', 2],
    ['Zolotuhin, Vadim V. & Pugaev, Sergey N. & Du, Tran Thieu', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);