function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baird, W.', 1],
    ['Brady, George Stewardson', 1],
    ['Chang, Cheon Young & Lee, Jimin & Smith, Robin J.', 3],
    ['Meisch, Claude & Smith, Robin J. & Martens, Koen', 12],
    ['Mesquita-Joanes, Francesc & Aguilar-Alberola, Josep A.', 3],
    ['Müller, Otto Friedrich', 3],
    ['Peng, Ping & Zhai, Dayou & Smith, Robin J. & Wang, Qianwei', 1],
    ['Rasouli, Hamidreza & Scharf, Burkhard & Meisch, Claude', 1],
    ['Sabater, Lara Milena & Monferran, Mateo Daniel & Higuti, Janet', 1],
    ['Savatenalinton, Sukonthip', 1],
    ['Scott-Frías, Joxmer & González, Ernesto & Pardo, María José', 2],
    ['Shearn, Rylan & Halse, Stuart & Koenders, Annette & Schön, Isa', 2],
    ['Smith, Robin J.', 1],
    ['Smith, Robin J. & Janz, Horst & Okubo, Ichiro', 2],
    ['Sowerby, James DeCarle', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);