function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Antonietto, Lucas Silveira & Carmo, Dermeval Aparecido do', 1],
    ['Antonietto, Lucas Silveira & Machado, Cláudia Pinto', 2],
    ['Brady, George Stewardson', 4],
    ['Brandão, Simone N. & Saeedi, Hanieh & Brandt, Angelika', 5],
    ['Chitnarin, Anisong & Forel, Marie-Béatrice & Tepnarong, Prachya', 3],
    ['Eagar, Stephen H. & Read, Geoffrey B.', 1],
    ['Forel, Marie-Béatrice & Grădinaru, Eugen', 2],
    ['Forel, Marie-Béatrice & Kolar-Jurkovšek, Tea & Jurkovšek, Bogdan', 5],
    ['Guernet, Claude & Villier, Loïc', 2],
    ['Karanovic, Ivana', 2],
    ['Okubo, Ichiro', 1],
    ['Schornikov, Evgeny I.', 2],
    ['Wannenmacher, Norbert & Dietze, Volker & Franz, Matthias', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);