function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boustani, Mira & Rasmont, Pierre & Dathe, Holger H.', 2],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 2],
    ['Lhomme, Patrick', 9],
    ['Michez, Denis & Pauly, Alain', 1],
    ['Panzer, Georg Wolfgang Franz', 1],
    ['Proshchalykin, M. Yu. & Astafurova, Yu. V. & Levchenko, T. V.', 6],
    ['Radchenko, Vladimir G.', 3],
    ['Radchenko, Vladimir G. & Ghisbain, Guillaume & Michez, Denis', 5],
    ['Risch, Stephan & Roberts, Stuart P. M. & Smit, Jan', 2],
    ['Zettel, Herbert & Ockermüller, Esther & Schoder, Sabine', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    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);