function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alonso, Alvaro & Prieto, Carlos E. & Quinonero-Salgado, Sergio', 2],
    ['Inaebnit, Thomas & Jochum, Adrienne & Slapnik, Raijko', 1],
    ['Jochum, Adrienne & E. Prieto, Carlos & Kampschulte, Marian', 3],
    ['Jochum, Adrienne & Michalik, Peter & Inäbnit, Thomas', 15],
    ['Jochum, Adrienne & Slapnik, Rajko & Klussmann-Kolb, Annette', 2],
    ['Jochum, Adrienne & de Winter, Anton J. & Weigand, Alexander M.', 2],
    ['Weigand, Alexander M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);