function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alegro, Antun & Šegota, Vedran & Rimac, Anja & Kiebacher, Thomas', 1],
    ['Azuelo, Andrea G. & Tan, Benito C. & Shevock, James R.', 1],
    ['Bruggeman-Nannenga, Maria A.', 1],
    ['Bruggeman-Nannenga, Maria A. & Müller, Frank', 9],
    ['Bruggeman-Nannenga, Maria Alida', 28],
    ['De, Tamara Poliana & Teixeira, Oliveira & A, Allan Laid', 1],
    ['Gomes do Nascimento, Géssica Maria', 24],
    ['Maier, Eva & Price, Michelle J.', 1],
    ['Majumdar, Shuvadeep & Bruggeman-Nannenga, M. A.', 1],
    ['Oliveira, Regigláucia Rodrigues de', 5],
    ['Osman, Imen Ben & Hugonnot, Vincent & Muller, Serge D.', 3],
    ['Papp, Beáta & Pantović, Jovana & Sabovljević, Marko S.', 2],
    ['Price, Michelle J.', 6],
    ['Reeb, Catherine & Letsara, Rokiman & Andriamiarisoa, Roger Lala', 1],
    ['Schäfer-VERwIMP, Alfons & VERwIMP, Inge', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    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);