function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bucur, Ioan I. & Jovanovic, Divna & Radoicic, Rajka', 2],
    ['Bucur, Ioan I. & Săsăran, Emanoil', 2],
    ['Bucur, Ioan I. & Yarahmadzahi, Hamed & Mircescu, Cristian V.', 1],
    ['Coppejans, Eric & Leliaert, Frederik & Verbruggen, Heroen', 2],
    ['Doweld, Alexander B.', 1],
    ['Jarvis, Charlie', 1],
    ['Kurth, Caroline & Welling, Matthew & Pohnert, Georg', 3],
    ['Rigaud, Sylvain & Joachim, Blau & Rossana, Martini', 1],
    ['SCHLAGINTWEIT, FELIX & RASHIDI, KOOROSH & MOSAVINIA, ABDOLMAJID', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);