function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Graening, G. O. & Shcherbanyuk, Yana & Arghandiwal, Maryam', 1],
    ['Sendra, Alberto & Antić, Dragan & Barranco, Pablo & Borko, Špela', 96],
    ['Sendra, Alberto & Arnedo, Miquel A. & Ribera, Carles', 1],
    ['Sendra, Alberto & Nicolosi, Giuseppe & Amore, Elena', 1],
    ['Sendra, Alberto & Palero, Ferran & Sánchez-García, Alba', 1],
    ['Sendra, Alberto & Weber, Dieter', 5],
    ['Silvestri, Filippo', 1],
    ['Tusun, Sadreddin & Satar, Ali', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=109)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);