function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aistleitner, Eyjolf & Behounek, Gottfried & Hoppe, Henri', 4],
    ['Dobado, Pablo M.', 2],
    ['Fernández Vidal, Eliseo H.', 2],
    ['Florido, Alfonso Sánchez & Moreno-Benítez, José Manuel', 1],
    ['Kim, Ok-Kyung & Ishikawa, Tadashi & Yamada, Yoshihiro', 2],
    ['Komal, J. & Shashank, P. R. & Sondhi, Sanjay & Madan, Sohail', 3],
    ['Mbata, Keith J. & Prins, Jurate De', 7],
    ['Resende, Daniela Chaves & Mendes, Simone Martins', 1],
    ['Rybalkin, Sergey A.', 1],
    ['Singh, Navneet & Ahmad, Jalil & Joshi, Rahul', 2],
    ['Swezey, O. H.', 1],
    ['Titov, Sergey V. & Volynkin, Anton V. & Morozov, Pavel S.', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);