function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 1],
    ['Camargo Keller, Victor & Lopes Pereira-Silva, Erico Fernando', 3],
    ['Deshmukh, Umakant Bhoopati & Shende, Mukund Bapurao', 1],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 4],
    ['Jarvis, Charlie', 4],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 1],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 1],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 6],
    ['Nagahama, Nicolás & Anton, Ana M. & Norrmann, Guillermo A.', 1],
    ['Ohwi, Jisaburo', 1],
    ['Oliveira, Adriana & Bove, Claudia', 4],
    ['Prunera-Olivé, Joan & Vorontsova, Maria S. & Williams, Emma V.', 6],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 20],
    ['Williams, Emma Victoria & Elia Ntandu, John & Ficinski, Pawel', 12],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=70)',
    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);