function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acal, Dale Ann P. & Wiesner, Juergen & Nuneza, Olga M.', 4],
    ['Boetzl, Fabian A. & Franzen, Michael', 5],
    ['Bousquet, Yves', 16],
    ['Damken, Claas & Wiesner, Jürgen & Wahab, Rodzay Abdul', 4],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 3],
    ['Matalin, A. V.', 18],
    ['Matalin, Andrey V.', 4],
    ['Medina, Milton Norman D. & Cabras, Analyn D. & Ibanez, Jayson', 3],
    ['Serrano, Artur R. M.', 4],
    ['Serrano, Artur R. M. & Capela, Rúben A. & Oesterle, Andreas', 3],
    ['Wiesner, Jürgen & Bandinelli, Aligi', 48],
    ['Wiesner, Jürgen & Bandinelli, Aligi & Matalin, Andrey', 21],
    ['Wiesner, Jürgen & Constant, Jérôme', 5],
    ['Wiesner, Jürgen & Dheurle, Charles', 9],
    ['Zettel, Herbert & Wiesner, Jürgen', 3],
    ['Other (19)', 27]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=177)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);