function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Bousquet, Yves', 25],
    ['Budilov, P. V.', 1],
    ['Chittaro, Yannick & Claude, François & Hoess, René', 1],
    ['Fleming, K. J. & Beresford, D. V.', 4],
    ['Hoess, René', 1],
    ['Hoess, René & Chittaro, Yannick & Walter, Thomas', 1],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 5],
    ['Shi, Hongliang & Liang, Hongbin', 3],
    ['Teofilova, Teodora', 2],
    ['Weber, Friedrich', 1],
    ['Wrase, DW', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);